Son of Campbell Dickson and Lucy Ellen Tracy, both of NY.

Leonard married, 30 Dec 1902 in Waco, McLennan Co., TX, Susan McLeod "Sudie" Davis.

Father of Campbell Davis Dickson and Elenore Campbell Dickson.
~~~~~~~~~~~~O~~~~~~~~~~~~
From: Encyclopedia Britannica Article:
Leonard Eugene Dickson born Jan. 22, 1874, Independence, Iowa, U.S., died Jan. 17, 1954, Harlingen, Texas. American mathematician who made important contributions to the theory of numbers and the theory of groups. Appointed associate professor of mathematics at the University of Texas at Austin in 1899, Dickson joined the staff of the University of Chicago in 1900, where he remained until 1939. A prolific mathematician, Dickson published the first extensive work on the theory of finite fields and expanded the Wedderburn and Cartan theories of linear associative algebras. One of his most-engrossing studies concerned the relationships between the theory of invariants and number theory. Using the analytic results of the Russian mathematician Ivan M. Vinogradov, he proved the ideal Waring theorem in his investigations of additive number theory. Of his 18 published books, the most monumental is History of the Theory of Numbers, 3 vol. (1919–23).

From: MacTutor History of Mathematics, Article by: J J. O'Connor and E F Robertson, August 2005:
Leonard Dickson, or L E Dickson as he often called, was born in Iowa but since his family moved to Texas when he was a young child he always considered himself a Texan. His parents were Lucy Tracy and Campbell Dickson, who worked as a banker. Campbell was also a merchant and made money through investing in real estate. Leonard attended both primary and secondary school in his home town of Cleburne. He entered the University of Texas and quickly came under the influence of Halsted who encouraged him to study mathematics. Dickson studied widely within mathematics but specialized in Halsted's own subjects of Euclidean and non-Euclidean geometry. Dickson received his B.S. in 1893 and his M.S. in 1894, again under Halsted's supervision. Dickson applied for doctoral fellowships at both Harvard and Chicago. He accepted an offer from Harvard but, on receiving a later offer from Chicago, changed his mind. At Chicago he was supervised by Eliakim Moore, but others there influenced him, for example Bolza and Maschke. Dickson received a Ph.D. from the University of Chicago in 1896 for a dissertation entitled The Analytic Representation of Substitutions on a Power of a Prime Number of Letters with a Discussion of the Linear Group. It was the first mathematics doctorate awarded by Chicago. Dickson then spent some time with Lie at Leipzig and later with Jordan in Paris. On returning to the United States he became an instructor at the University of California in Berkeley. He was appointed as associate professor at the University of Texas at Austin in 1899. However Eliakim Moore and his colleagues in Chicago were keen that Dickson should return there and they offered him a permanent post on the faculty. He accepted immediately and served as assistant professor at the University of Chicago from 1900 to 1907, then associate professor to 1910 when he was promoted to full professor. He remained as a professor at Chicago for the rest of his career, retiring in 1939 when he was made professor emeritus. He did spend periods during these years away from Chicago, principally at the University of California where he was a visiting professor in 1914, 1918, and 1922. Dickson married Susan McLeod Davis in 1902; they had two children. Dickson was awarded many honours. He was elected to the National Academy of Sciences (United States) in 1913 and was also a member of the American Philosophical Society, the American Academy of Arts and Sciences, the London Mathematical Society, the French Academy of Sciences and the Union of Czech Mathematicians and Physicists. The American Association for the Advancement of Science decided to set up a prize for the most major contribution to the advancement of science. Dickson was the first recipient of the prize, being awarded $1,000 in 1924 for his work on the arithmetic's of algebras. He was also the first recipient of the Cole Prize for algebra awarded by the American Mathematical Society in 1928 for his book Algebren und ihre Zahlentheorie published in Zurich and Leipzig in 1927. Dickson was much involved with the American Mathematical Society, becoming its president in 1917-1918 having earlier, in 1913, been its Colloquium Lecturer. He gave his presidential address in December 1918 on the topic Mathematics in War Perspective in which he criticized the United States for falling short of making the mathematical preparations of Britain, France, and Germany.
As a final comment on honours given to Dickson, we note that Princeton (1941) and Harvard (1936) were among the universities that awarded him an honorary degrees.

Son of Campbell Dickson and Lucy Ellen Tracy, both of NY.

Leonard married, 30 Dec 1902 in Waco, McLennan Co., TX, Susan McLeod "Sudie" Davis.

Father of Campbell Davis Dickson and Elenore Campbell Dickson.
~~~~~~~~~~~~O~~~~~~~~~~~~
From: Encyclopedia Britannica Article:
Leonard Eugene Dickson born Jan. 22, 1874, Independence, Iowa, U.S., died Jan. 17, 1954, Harlingen, Texas. American mathematician who made important contributions to the theory of numbers and the theory of groups. Appointed associate professor of mathematics at the University of Texas at Austin in 1899, Dickson joined the staff of the University of Chicago in 1900, where he remained until 1939. A prolific mathematician, Dickson published the first extensive work on the theory of finite fields and expanded the Wedderburn and Cartan theories of linear associative algebras. One of his most-engrossing studies concerned the relationships between the theory of invariants and number theory. Using the analytic results of the Russian mathematician Ivan M. Vinogradov, he proved the ideal Waring theorem in his investigations of additive number theory. Of his 18 published books, the most monumental is History of the Theory of Numbers, 3 vol. (1919–23).

From: MacTutor History of Mathematics, Article by: J J. O'Connor and E F Robertson, August 2005:
Leonard Dickson, or L E Dickson as he often called, was born in Iowa but since his family moved to Texas when he was a young child he always considered himself a Texan. His parents were Lucy Tracy and Campbell Dickson, who worked as a banker. Campbell was also a merchant and made money through investing in real estate. Leonard attended both primary and secondary school in his home town of Cleburne. He entered the University of Texas and quickly came under the influence of Halsted who encouraged him to study mathematics. Dickson studied widely within mathematics but specialized in Halsted's own subjects of Euclidean and non-Euclidean geometry. Dickson received his B.S. in 1893 and his M.S. in 1894, again under Halsted's supervision. Dickson applied for doctoral fellowships at both Harvard and Chicago. He accepted an offer from Harvard but, on receiving a later offer from Chicago, changed his mind. At Chicago he was supervised by Eliakim Moore, but others there influenced him, for example Bolza and Maschke. Dickson received a Ph.D. from the University of Chicago in 1896 for a dissertation entitled The Analytic Representation of Substitutions on a Power of a Prime Number of Letters with a Discussion of the Linear Group. It was the first mathematics doctorate awarded by Chicago. Dickson then spent some time with Lie at Leipzig and later with Jordan in Paris. On returning to the United States he became an instructor at the University of California in Berkeley. He was appointed as associate professor at the University of Texas at Austin in 1899. However Eliakim Moore and his colleagues in Chicago were keen that Dickson should return there and they offered him a permanent post on the faculty. He accepted immediately and served as assistant professor at the University of Chicago from 1900 to 1907, then associate professor to 1910 when he was promoted to full professor. He remained as a professor at Chicago for the rest of his career, retiring in 1939 when he was made professor emeritus. He did spend periods during these years away from Chicago, principally at the University of California where he was a visiting professor in 1914, 1918, and 1922. Dickson married Susan McLeod Davis in 1902; they had two children. Dickson was awarded many honours. He was elected to the National Academy of Sciences (United States) in 1913 and was also a member of the American Philosophical Society, the American Academy of Arts and Sciences, the London Mathematical Society, the French Academy of Sciences and the Union of Czech Mathematicians and Physicists. The American Association for the Advancement of Science decided to set up a prize for the most major contribution to the advancement of science. Dickson was the first recipient of the prize, being awarded $1,000 in 1924 for his work on the arithmetic's of algebras. He was also the first recipient of the Cole Prize for algebra awarded by the American Mathematical Society in 1928 for his book Algebren und ihre Zahlentheorie published in Zurich and Leipzig in 1927. Dickson was much involved with the American Mathematical Society, becoming its president in 1917-1918 having earlier, in 1913, been its Colloquium Lecturer. He gave his presidential address in December 1918 on the topic Mathematics in War Perspective in which he criticized the United States for falling short of making the mathematical preparations of Britain, France, and Germany.
As a final comment on honours given to Dickson, we note that Princeton (1941) and Harvard (1936) were among the universities that awarded him an honorary degrees.