Glen Arm, Maryland | |
|---|---|
 The old Glen Arm "Ma and Pa" railroad station in 2019 | |
  Glen Arm, Maryland Location within the State of Maryland Show map of Maryland Glen Arm, Maryland Glen Arm, Maryland (the United States) Show map of the United States | |
| Coordinates:39°27′12″N76°29′40″W / 39.45333°N 76.49444°W /39.45333; -76.49444 | |
| Country |  United States |
| State |  Maryland |
| County |  Baltimore |
| Time zone | UTC-5 (Eastern (EST)) |
| • Summer (DST) | UTC-4 (EDT) |
| ZIP codes | 21057 |
Glen Arm is anunincorporated community inBaltimore County,Maryland, United States.[1] Glen Arm lies along what is now Glen Arm Road, which was once part ofOld Harford Road, one of the early routes used for conveying agricultural products from parts ofHarford and Baltimore Counties and southernPennsylvania to the port ofBaltimore. Glen Arm was also served until 1958 by theMaryland and Pennsylvania Railroad (the "Ma & Pa"). In 1921, at the railroad's crossing of Glen Arm Road, what generally is recognized as the nation's first train-actuatedrailroad crossing signal was installed by the railroad's Superintendent of SignalsCharles Adler, Jr. Adler later designed early traffic-actuatedtraffic lights for the City of Baltimore, and also invented the system of flashing warning lights used on aircraft.[2]
Glen Arm was once the home to aGrumman aircraft manufacturing plant. Today the building serves as the American headquarters of SUN Automation Group which makes feeding, printing and converting machinery for corrugated box production.[3]
Ravenshurst, a historicCarpenter Gothic-style home in Glen Arm, was listed on theNational Register of Historic Places in 1978.[4] It was destroyed by fire in 1985.[5]
In the 1990s Glen Arm was the center of the Towson Glen Arm music and art collective.[6]
A notable resident of Glen Arm wasCharles Joseph Bonaparte (1851–1921), whose country estate Bella Vista was in the area. Bonaparte, a great nephew of theFrench emperorNapoleon, served asUnited States Secretary of War andUnited States Attorney General underPresidentTheodore Roosevelt. As Attorney General, Bonaparte established theBureau of Investigation, which later became theFBI.
In August, 2019, the Baltimore County Council designated the old Ma & Pa Railroad station, built in 1909, as a protected historical landmark.[7]
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