Analytic geometry, 1897.

Locke, L. Leland (Leslie Leland), 1875-

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Leslie Leland Locke (1875-1943) was a professor of the history of mathematics at Brooklyn College, and a noted authority on the history of mathematical instruments, particularly the Peruvian quipu. In 1939, Locke donated his personal collection of early calculating machines to the United States National Museum (Smithsonian Institution). He was also a graduate of Grove City College. From the description of Leslie Leland Locke scrapbooks, 1873-1939. (Smithsonian Institution Libraries)....

Pennsylvania State College

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Franklin, Fabian, 1853-1939

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Fabian Franklin was born in Eger, Hungary on January 18, 1853. He received a PhD in Mathematics from Columbian University (now known as George Washington University) in 1869. After graduation he worked as an engineer and a surveyor for the Pittsburgh and Connellsville Railraod and then the City Surveyor's Office in Baltimore before returning to academia. From 1877 to 1895 he was part of the Department of Mathematics at the Johns Hopkins University, starting as a Fellow and working u...