In the 1880s Montgomery, a native ofYuba City, California, made manned flight experiments in a series ofgliders in the United States inOtay Mesa inSan Diego, California.[8][9][7][10][11][12] Although not publicized in the 1880s, these early flights were first described by Montgomery as part of a lecture delivered at the International Conference on Aerial Navigation at Chicago, 1893.[13][14] These independent advances came after gliding flights by European pioneers such asGeorge Cayley's coachman in England (1853) andJean-Marie Le Bris in France (1856).[15] Although Montgomery never claimed firsts, his gliding experiments of the 1880s are considered by some historians and organizations to have been the first controlled flights of a heavier-than-air flying machine in America[16][14][17] or in the Western Hemisphere,[18][19][20][21][22][23][24][25] depending on the source.
Montgomery devised different control methods for his gliders, including weight shifting for roll and an elevator for pitch (1884). Subsequent designs used hinged, pilot-operated trailing edge flaps on the wings (1885–1886) for roll control,[26][27][28][29][9][30] and later, fullwing warping systems for roll (1903–1905)[31][32] and for both pitch and roll (1911).[33]
Montgomery attendedSt. Ignatius High School, graduating in 1873. At age 16 he attended the preparatory division at Santa Clara College from 1874 to 1876 to prepare for college.[34]
Montgomery attended St. Ignatius College, now known as theUniversity of San Francisco. Here, he studied under Fathers Joseph Bayma, S.J., and Joseph Neri, S.J., two gifted and influential educators.[34] As a student in San Francisco, Montgomery must have mentioned his desire to build a flying machine, according to Fogel and Harwood.[34] They include an observation in their book, made by Montgomery's contemporary, Rev. Fred Morrison, S.J.: “In those days anyone who even mentioned ‘man being able to fly’ was considered a little bit off.[34] So, when John was in the vicinity, there was a general tapping of heads, which in our present day would be the sign that the party was crazy.”[34] At St. Ignatius College, Montgomery received aBachelor of Arts in physics in 1879 and a master's degree in physics in 1880.[34] He also received an honorary PhD in physics from Santa Clara University in 1901.[34]
In the early 1880s Montgomery began studying the anatomy of a variety of large soaring birds to determine their basic characteristics like wing area, weight and curved surfaces. He made detailed observations of birds in flight, especially large soaring birds such as eagles, hawks, vultures and pelicans which soared on thermals nearSan Diego Bay.[35]
He initially attempted to achieve manned flight withornithopters. In 1883, he built and experimented with a series of three ornithopters but found that human strength was insufficient to generate the necessary lift. He abandoned flapping-wing flight, preferring instead to emulate soaring birds with fixed-wing craft. He reasoned that it would be possible to solve the physics of gliding and soaring flight and then add a motor.[36]
Montgomery first tested his concepts for the design, construction and control of gliders with small-scale,free flight models. His first glider in 1883-84 had acambered airfoil based on the curve of the seagull wing.Pitch was controlled by an operableelevator androll was controlled by pilot weight shift.Yaw was uncontrolled. This aircraft design served as the basis for three gliders over the period 1883–1886. In the spring of 1884, Montgomery made flights of up to 600 feet (180 m)[29] from the rim of Otay Mesa.[9][37] During experiments with this craft, Montgomery found that the glider would not respond well to side gusts. He returned to ornithology and noted howturkey vultures had significantdihedral andtwisted their wings as a form of lateral balance.[9]
Emulating these control methods, in 1884-1885 he incorporated hinged flaps into the trailing edge of a second glider. These were held under spring tension for automatic balance in gusts, but were also connected through cables to the pilot's seat so they could be operated mechanically by the pilot for roll control.[9][38] In essence these flaps were earlyailerons.[29][39] The second glider had a flat plateairfoil, considerable dihedral for stability and an operable elevator for pitch control. Montgomery devised an inclined rail system so the piloted glider could roll from the top of a hill and attain flight speed.
In the winter of 1885–86, Montgomery constructed a third glider. It had a cambered airfoil modeled after the wings of a vulture, though the leading and trailing edges were turned upward slightly. The wing, spanwise, was"gull" shaped. Controls allowed the pilot to vary theangle of incidence of the left and right wing either in unison or independently. Dihedral and an operable elevator were also included.[9] Montgomery concluded that a better understanding of aerodynamics was needed for the design of a proper airfoil.
In an 1893 speech, Montgomery said that flights were made in these three craft during the period 1884–1886, with the occasional assistance of at least three friends and two younger brothers.[40] Of the flight trials with the second craft (of 1885)Octave Chanute's account in 1893 noted "several trials were made, but no effective lift could be obtained." Of the third craft (of 1886) Chanute wrote "this last apparatus proved an entire failure, as no effective lifting effect could be obtained from the wind sufficient to carry the 180 lbs. it was designed to bear.""[41]
Montgomery's own account made clear that he considered the technology of the second and third gliders of 1885 and 1886 as effective, but the airfoil designs were a disappointment in terms of lift-generation as they produced much shorter gliding flights in comparison to the first craft of 1884. He realized he was getting increasingly farther from understanding the mechanism of lift and began controlled laboratory experiments to investigate airfoils. In 1886, he briefly considered filing apatent caveat for lateral balancing, but did not.[10]
About 1885 Montgomery began a long series of experiments with a whirling arm device, a smoke chamber, a water current table and large wooden surfaces angled into the wind in order to understand the physics of flow around curved surfaces.[42] He also used dried bird wings placed in wind currents to observe the effect. His work in the 1880s confirmed that mechanical systems used by a pilot could preserve lateral balance and some degree of equilibrium in gliding flight. His experiments also confirmed the value of a cambered surface for obtaining lift.[43]
In 1893 Montgomery visited theWorld's Columbian Exposition in Chicago, intending initially to attend a lecture by electrical expertNikola Tesla. Upon arrival, he heard of the International Conference on Aerial Navigation to take place the first week of August. He introduced himself toOctave Chanute andAlbert F. Zahm, who were collaborating in chairing the conference. He did not present a paper, but was subsequently invited by Chanute and Zahm to participate in the conference by giving two lectures of his own. His first focused on his experiments with surfaces in air and water currents. This talk was revised into an article and included in the conference proceedings.[44] The article was later published in the July 1894 edition ofAeronautics. With encouragement from Chanute, Montgomery decided to give a second lecture. Although he refrained from providing enough detail that might be useful to designers, he did discuss use of hinged wing sections for lateral control.[13] His second lecture was not published as part of the conference proceedings, because Chanute thought Montgomery wanted to seek patent protection. Instead, Chanute presented his own comments on Montgomery's flight experiments in his article seriesProgress in Flying Machines, which was published serially in theAmerican Engineer and Railroad Journal in 1893, and in the following year as a book of the same name. Montgomery reprised his second lecture in a talk to the Aeronautical Society of New York in 1910, and the contents were later published in several journals and books.[9]
From 1893 to 1895, while teaching at Mount St. Joseph's College inRohnerville, California,[45] Montgomery conducted further experiments into the physics of flow over a wing and lift generation using a smoke chamber and water table. From these experiments he developed a theory of lift based onvorticity, or what modern aerodynamicists refer to as a "circulation theory" or "lifting-line theory".[10][46] Montgomery compiled his results into a 131-page manuscript titledSoaring Flight[47] and attempted to have it published byMatthias N. Forney and the editors ofScientific American with the help of Octave Chanute.[48] Chanute was reluctant to endorse it due to his disagreements with some of its theoretical content and suggested that it be edited to distinguish between experimental results and theoretical inferences.[49]Scientific American rejected the manuscript, but later published an abstract. Chanute also directed one of his collaborators,Augustus Herring, to study the manuscript, as he considered it instructive in understanding "ground effect."[50]
In 1884 Montgomery received a patent for a process to vulcanize and de-vulcanize India rubber. In 1895 and again in the period 1901 to 1904, Montgomery occasionally supplemented his aeronautical research with work in other branches of science, including electricity, communication, astronomy and mining. In 1895 he received four patents (American, German, British, and Canadian) for improvements in the efficiency of petroleum burning furnaces. In 1897 he took a teaching position at Santa Clara College and directed study of wireless telegraphy with Father Richard Bell. They were first to successfully transmit messages from Santa Clara College to San Francisco.[51] Montgomery also patented two gold concentrator devices to assist miners in extracting gold from beach sands (see patent list).
In early 1903, veteran balloonistThomas Scott Baldwin sought Montgomery's knowledge of aeronautics. Baldwin had also been assistingAugust Greth in constructing and experimenting with an airship (dubbed theCalifornia Eagle) atSan Jose, California.[52] Baldwin wanted improved propeller designs for dirigibles. He stopped working with Greth and came to Santa Clara College for an extended period to learn aeronautics from Montgomery. Their work together included wind tunnel tests at the college.[53][54][55] At Baldwin's suggestion, they entered into a business arrangement in 1904 to make public exhibitions with manned Montgomery gliders launched at high altitudes from unmanned Baldwin balloons.[56] By late May 1904, Montgomery made test flights with a new glider.[57][58] However, Baldwin abandoned their collaboration and instead constructed his own airship (theCalifornia Arrow) at San Jose incorporating Montgomery's propeller design and a 7-horsepower motorcycle engine (theHercules of G.H. Curtiss Mfg Co.). TheCalifornia Arrow would be first in America to make repeated circuits under control.[55][59][60][61] During a protracted period of acrimony between Montgomery and Baldwin, Baldwin entered theCalifornia Arrow in the aeronautic competition at theSt. Louis World's Fair in November, 1904 and took first place.[62][63][64]
John J. Montgomery and his tandem-wing gliderThe Santa Clara on 29 April 1905
In the fall of 1904 Montgomery conducted tests of his tandem-wing glider, theMontgomery Aeroplane, with associates Frank Hamilton andDaniel J. Maloney. On March 16, 17 and 20, 1905, inAptos, California, Daniel Maloney made several successful flights in the glider at Leonard's ranch (Rancho San Antonio, now known as Seascape), after releasing from a hot-air balloon at high altitude. The resulting glides were well-controlled, and flights lasted up to 13 minutes.[65][66] News of these flights received attention in both the U.S. and Europe.[67][68][69][70][71][72][73] After this success, Montgomery gave a press conference to provide for the first time a history of his efforts in aeronautics and announced a patent application for his aeroplane and methods of wing warping.[74] On April 29, 1905, Montgomery, Maloney, and Hamilton provided a public demonstration of theMontgomery Aeroplane, rechristened that day asThe Santa Clara in honor of Santa Clara College. In view of hundreds of spectators and members of the press, Maloney released from the balloon at an approximate altitude of 4,000 feet above Santa Clara College. Maloney performed a series of pre-determined maneuvers and made a soft landing near the college grounds.[75][76][77] This exhibition brought widespread recognition for Montgomery and was generally accepted as a milestone in aviation.[6][78][79][80][81][82][83][14][84] In the following months Montgomery and Maloney made many exhibitions withThe Santa Clara and another tandem wing gliderThe California in the San Francisco bay area. On July 18, 1905, Maloney was killed when a rope from the balloon damaged the glider during the ascent, causing structural failure after release. Despite this, Montgomery continued experiments with other tandem-wing gliders and pilots for some time.
John J. Montgomery landingThe Evergreenmonoplane glider in October, 1911.
Following the catastrophic1906 San Francisco earthquake, Montgomery's gliding experiments were curtailed until 1911. Montgomery began experimenting with a new control system in which pitch and roll of the glider were managed by wing warping, while the tail assembly was fixed. Montgomery intended to add a motor and apply for a patent. This glider,The Evergreen (named after theEvergreen district ofSan Jose, California where flight tests occurred), was flown by Montgomery as well as another aeronaut, Reinhardt, more than 50 times in October 1911.
On October 31, 1911, Montgomery was attempting to landEvergreen at low speed and encountered turbulence, which caused a stall. He crashed and died from his injuries at the site. The hillside (now known as "Montgomery Hill") is just behindEvergreen Valley College. John J. Montgomery was buried atHoly Cross Cemetery inColma, California on November 3, 1911.
The Aeronautical Society of New York (1910), elected honorary member "in recognition of his manifold labors to advance the art of aviation."[39]
The Aeronautical Society (1911), as invited member of the Research Committee of the Technical Board[87][88] and Organization and Convention Committee.[89]
The Santa Clara Valley Aero Club (1911), first Vice President.[90]
In 1946,Columbia Pictures releasedGallant Journey, a full-length movie[91] based on John J. Montgomery's life and work. The film was directed byWilliam A. Wellman, and starredGlenn Ford as Montgomery,Janet Blair as his wife Regina (née Cleary), whom he had married in 1910, andCharles Ruggles. The stunt pilots for the film werePaul Mantz,[92] Paul Tuntland[93][94] and Don Stevens. The film included several different historical reenactments of Montgomery's glider flights.[95]Gallant Journey premiered in San Diego, California on September 2, 1946, and had its full national release September 24, 1946. As part of the publicity for the movie, Columbia Pictures sponsored a cross-country Boston to Los Angeles tour featuring a 1911 vintage auto, the same vintage as Montgomery's last flight. William Wellman had served previously in theU.S. Army Air Corps and was stationed as an officer atRockwell Field, San Diego, California and Glenn Ford had also served in San Diego during World War II.
Montgomery Memorial, Otay Mesa.[96][97] The Montgomery Memorial was dedicated on May 21, 1950, and features a silver static test wing panel for theConsolidated B-32 Dominator mounted upright that is visible for miles.[98] It is also associated with a recreation center near the location of his first glides (Montgomery-Waller Recreation Center, San Diego, California[99]). The memorial was designed by pioneering modernist Lloyd Ruocco.[100]
Montgomery Hill, San Jose[101] nearEvergreen Valley College. Evergreen Valley College also honors his memory with a green space (Montgomery Grove), a lecture hall (Montgomery Hall), and an observatory (Montgomery Hill Observatory). On March 15, 2008, a sculpture was unveiled at San Felipe and Yerba Buena roads inSan Jose, California as a tribute to Montgomery. The 30-foot-tall steel structure of a glider wing was placed on a 32-foot-diameter plaza (later designated Montgomery Plaza) designed by San Francisco artist Kent Roberts.[102]
In 1919, the San Francisco Board of Supervisors changed the name of the Marina Flying Field just east ofCrissy Field to "Montgomery Field."[103] From 1920 to 1944 Montgomery Field served as an airmail facility. This field still exists along the Embarcadero asMarina Green.
On May 20, 1950,Montgomery Field (KMYF) in San Diego, California, one of the busiestgeneral aviation airports in the world, was named in his honor.[98]
In 1924, a new engineering building was dedicated as the Montgomery Laboratories on the campus ofSanta Clara University. This laboratory was located where Mayer Theatre is today.[114] A celebration was held March 18, 1934 at Santa Clara University to mark the 50th anniversary of Montgomery's first glider flight.[115] Also on the campus of Santa Clara University, an obelisk was dedicated by the citizens ofSanta Clara, California to Montgomery on April 29, 1946, at the location of Maloney's 1905 glider flights.[116]
In the 1960s, the National Society of Aerospace Professionals and theSan Diego Aerospace Museum established aJohn J. Montgomery Award for aerospace excellence. Members of the X-15, Mercury, and Polaris programs received the award, including astronauts such asNeil Armstrong. In 1968, the City of Santa Clara dedicated October 31, 1968 as "John J. Montgomery Day" in his honor.[119]
On March 19, 2005, John J. Montgomery was the focus of aCentennial Celebration of Soaring Flight, held inAptos, California at the location of some of his early glider experiments. At this celebration, a marker was placed in Aptos in honor of the first manned high−altitude flights.[121]
The City of San Diego dedicated August 23, 2008 as "John J. Montgomery Day" in San Diego.[123] The City Council made a similar dedication on November 9, 2017.
In May 2016, theSan Diego Air & Space Museum established a new exhibit for John J. Montgomery in their main rotunda, includingThe Evergreen glider from 1911 and Montgomery's originalSoaring Flight manuscript from 1896.[124] In 2017, Montgomery was inducted into theInternational Air & Space Hall of Fame at the Museum.[125]
Also in 2023, theAmerican Society of Mechanical Engineers established a new annual "John J. Montgomery Award for Distinguished Innovation in Aerospace" designed to "recognize the outstanding contribution of an individual engineer residing in the international community who has researched, designed or developed (or any combination thereof) new technologies or equipment for the aerospace industry, i.e., propulsion, aerospace structure/materials, stability and control, etc."[127] This medal was first offered in 2024.[128]
Montgomery, John J.Discussions on the Various Papers on Soaring Flight Proceedings of the International Conference on Aerial Navigation, Chicago, Aug. 1–4. 1893 pp. 246–249.
Montgomery, John J.The Mechanics Involved in a Bird's Wing in Soaring and Their Relation to Aeronautics, Address to the Southern California Academy of Sciences, Los Angeles, Nov. 9, 1897.
Montgomery, John J.The Aeroplane, The Aeroplane Advertising Co., Santa Clara, California, 1905.
Montgomery, John J. "New Principles in Aerial Flight",Scientific American, November 25, 1905.
Montgomery, John J.Principles Involved in the Formation of Winged Surfaces and the Phenomenon of Soaring, presented at the Aeronautics Congress, New York, Oct. 28–29, 1907. Published as a series inAeronautics Vol. 3, No. 4, pp. 30–33, October, 1908; Vol. 3, No. 5, pp. 34–40, November, 1908; Vol. 3, No. 6, pp. 32–36, December, 1908; Vol. 4, No. 1, pp. 43–46.
Montgomery, John J. "Some Early Gliding Experiments in America",Aeronautics, Vol. 4, No. 1, 1909, pp. 47–50.
Montgomery, John J. "The Origin of Wing Warping: Professor Montgomery's Experiments",Aeronautics (London), Vol. 3, No. 6, 1910, pp. 63–64.
Montgomery, John J. "Our Tutors in the Art of Flying",Aeronautics, September 22, 1915, pp. 99–100 (article printed posthumously).
U.S. patent 0,974,415 -Process for compelling electric motors to keep in step with the waves or impulses of the current driving them, and a motor embodying the process - 1910 November 1
^abcdefgMontgomery, John J. (April 21, 1910).The Origin of Wing Warping (Speech). Aeronautic Society of New York.(Aeronautics 1910)
^abcHarwood, Craig; Fogel, Gary (2012).Quest for Flight: John J. Montgomery and the Dawn of Aviation in the West. Norman, Oklahoma: University of Oklahoma Press.ISBN978-0806142647.
^Berriman, Algernon E. Aviation. An Introduction to the Elements of Flight, Methuen & Co., London, 1912. pp. 213-214.
^"Montgomery's Gliding Experiments", in Hayward, Charles B.Practical Aeronautics: An Understandable Presentation of Interesting and Essential Facts in Aeronautical Science. Chicago: American School of Correspondence, 1912.
^abZahm, Albert F. (1923) "Catholic Contributions in the Field of Aeronautics" in Benson, William Shepherd, James J. Walsh, Edward J. Hanna, and Constantine E. McGuire.Catholic Builders of the Nation: A Symposium on the Catholic Contribution to the Civilization of the United States. Boston: Continental Press.
^abcPritchard, John Lawrence (1929).The Book of The Aeroplane. The University of Michigan: Longmans Green & Company. p. 17.
^The Journal of San Diego History, July 1968, Vol. 14, No. 3.
^National Cyclopedia of American Biography: Being the History of the United States as Illustrated in the Lives of the Founders, Builders, & Defenders of the Republic, etc..., Edited by Distinguished Biographers, James T. White & Co. Volume XVI, 1916.
^Mark D. Ardema and Joseph Mach, Santa Clara University School of Engineering, and William J. Adams, Jr., "John Joseph Montgomery, 1883 Glider: An International Historic Mechanical Engineering Landmark, Designated by the American Society of Mechanical Engineers, May 11, 1996, at Hiller Aircraft Museum and Santa Clara University" (brochure, 11 pp.)
^"Montgomery First to Conquer the Air: Austrian Officials after Inquiry Give Palm to California Inventor,"San Francisco Examiner, May 16, 1909. See also "Conquering the Air,"San Francisco Monitor, June 12, 1909.
^Jacobs, James W. "John Joseph Montgomery." In James W. Jacobs,Enshrinee Album: The First Twenty-One Years, 134⟨n⟩35. Dayton, Ohio: National Aviation Hall of Fame, 1984.
^L'Écho Des Ailes: Revue Indépendante pour la Défense des Intérêts Aéronautiques, Vol. 17, No. 2, January 23, 1948. By Fédération des Clubs Belges d'Aviation de Tourisme, Brussels, Belgium.
^"Flug-Revue" ("Flight Review"), 1968,Vereinigte Motor-Verlage, p. 155.
^Hearings, Reports and Prints of the House Committee on Science and Astronautics, United States Congress. House Committee on Science and Astronautics, U.S. Govt. Printing Office, Washington D.C., 1972.
^"Machine with Wings Upsets Theories," "Years of Research Applied to Solving the Problem,"San Jose Mercury Evening News, March 31, 1905.
^"Third Tests Are All Successful,"San Francisco Bulletin, March 26, 1905.
^abcMontgomery, John J. (1909). "Some Early Gliding Experiments In America".Aeronautics (New York).4 (1).
^Hayward, Charles B. (ed.) (1912)Practical Aeronautics, American School of Correspondence, Chicago.(Introduction written by Orville Wright)
^"The Origin of Warping: Professor Montgomery's Experiments".Aeronautics.3 (6). London:63–64.
^Chanute, Octave. (1907) "Montgomery." In:Pocket-Book of Aeronautics, edited by Hermann. W. L. Moedebeck, translated by W. Mansergh Varley, Vol. 309, No. 10. London: Whittaker and Co.
^Campi, Richard B. (1961) "Description and Analysis of the 1911 Montgomery Controllable Man Carrying Glider." Working paper, December 29, 1961.
^Montgomery, John (1910). "Our Tutors in the Art of Flying".Aeronautics (London):99–100.
^Kavanagh, Dennis K. (1905).The Aeroplane. Santa Clara, California: The Aeroplane Advertising Company.
^Montgomery, James P., direct testimony in response to Q. 16, Jan. 13, 1919, Regina C. Montgomery et al. v. the United States - Equity No. 33852.
^Montgomery, Richard J. Direct Testimony in Court (Equity No. 33852) on January 13, 1919.
^ab"Montgomery Hits Wright's Patent: California College Professor Claims He Invented Warped Wings Back in 1885," New York World, April 24, 1910.
^United States. n.d. Court of Claims of the United States. No. 33852. Regina Cleary Montgomery, heir, and Richard J. Montgomery, Mary C. Montgomery, Margaret H. Montgomery, and Jane E. Montgomery, assignees of Ellen Montgomery heir of John J. Montgomery, deceased, v. the United States." Testimony provided in direct and cross examination by Charles T. Couts, Charles Burroughs, James P. Montgomery, Richard J. Montgomery, Mary F. McCarthy, January 1919."
^Montgomery, John J. (1894) "Discussion of the Various Papers on Soaring Flight,"Proceedings of the Conference on Aerial Navigation (M.N. Forney, ed.), Chicago, Illinois, Aug. 1-4, 1893, Published by theAmerican Engineer and Railroad Journal, pp. 247-249.
^Montgomery, John J. (1894) "Discussion of the Various Papers on Soaring Flight,"Aeronautics Vol. 1, No. 10 (July), pp. 127-128.
^Chanute, Octave (July 17, 1895). "Montgomery publication". Letter to Matthias Forney.
^Chanute, Octave (July 15, 1895). "Montgomery publication". Letter to John Montgomery.
^Chanute, Octave (March 17, 1895). "Ground effect". Letter to August Herring.
^"Local scientists invent a new system of wireless telegraphy,"San Francisco Call, March 6, 1904.
^"Montgomery Seeks to Restrain Baldwin and Seeks Damages".San Jose Evening News. San Francisco, CA. April 7, 1905.
^"Airship Inventor Visits San Jose: Captain Baldwin, Builder of the California Arrow, Talks of His Plans and Future of Aerial Navigation".San Jose Daily Mercury. San Jose, CA. December 5, 1904.
^Baldwin, Thomas.New York World Magazine, November 27, 1904
^ab"Father Bell and Captain Baldwin: Priest-Scientist of Santa Clara College Gives Credit for Success of Aerial Experiments to Professor Montgomery".San Jose Daily Mercury. San Jose, CA. December 6, 1904.
^"Aeronauts Row Over Airship".San Francisco Call. San Francisco, CA. April 8, 1905.
^"Careful Research of Several Years Assured Success".San Francisco Bulletin. San Francisco, CA. March 26, 1905.
^"Inventor of New Airship Has Trouble with Baldwin".San Jose Mercury. San Francisco, CA. April 7, 1905.
^J. Mayne Baltimore, "The New Baldwin Airship,"Scientific American 91, no. 9 (August 27, 1904): 147.
^Glenn H. Curtiss and Augustus Post,The Curtiss Aviation Book (New York: Frederick A. Stokes Co., 1912), 30.
^"Did Baldwin Have Ideas for Airship?".San Jose Mercury News. San Jose, CA. December 27, 1904.
^Scamehorn, Howard Lee (1905). "Thomas Scott Baldwin: The Columbus of the Air".Journal of the Illinois State Historical Society.49 (2):163–189.
^Knabenshue, A. R., "My Flights in the 'Arrow'",The Independent, Nov. 10, 1904, vol LVII, pp 1127-1130.
^Dewey, Elbert E. (1905). "An Airship's Success".The Technical World.1 (September):476–484.
^John J. Montgomery, letter to Octave Chanute, April 11, 1905 in Arthur Spearman, S J,John Joseph Montgomery Father of Basic Flying, Univ. of Santa Clara, 1967 pp. 92-94
^Bell, Richard H. (1905). "The Success of March 18th".The Redwood.4 (5):24–25.
^Masfrand, D.E. (1905). "Les Essais et la Catastrophe du 'Santa Clara'".L'Aérophile (August):178–180.
^DeMeriel, P. (1905). "Un aeroplane a 1200 meters".La Nature (November 25): 412.
^Hermann Moedebeck,Fliegende Menschen! Das Ringen um die Beherrschung der Luft mittels Flugmaschinen (Berlin: O. Salle, 1905)
^Johnson, Kenneth M. (1961)Aerial California: An Account of Early Flight in Northern and Southern California, 1849 to World War I, Dawson's Book Shop, Los Angeles, California.
^Copy of membership card can be found in the John J. Montgomery Papers 1885-1947, The Southern Historical Collection, University of North Carolina Library, Chapel Hill, North Carolina.
^John J. Montgomery Papers 1885-1947, The Southern Historical Collection, University of North Carolina Library, Chapel Hill, North Carolina.
^Dwiggins, Don (1967)Hollywood Pilot: The Biography of Paul Mantz, Doubleday and Co., Inc., Garden City, NY
^Campion, John C. (September 1950)."Paul Tuntland page 4"(PDF).soaringweb.org.Archived(PDF) from the original on April 2, 2015. RetrievedMarch 14, 2022.
^Campion, John C. (September 1950)."Paul Tuntland page 5"(PDF).soaringweb.org.Archived(PDF) from the original on April 2, 2015. RetrievedMarch 14, 2022.
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