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| | Edward Potts Cheyney (1861-1947), University of Pennsylvania Archives |
 | | Edward Potts Cheyney, a historian of European history, was born on January 17, 1861 in Wallingford, Pennsylvania, the fourth son of Waldron J. Cheyney, a chemical and mining industries businessman, and Fannie Potts. |
 | | Cheyney began his fifty-year teaching career at the University of Pennsylvania as an instructor in history, Latin, and mathematics. |
 | | Cheyney's 1923 presidential address to the AHA, titled "Law in History," vehemently defended his idea of scientific history and defined six "immutable self-existent" laws of continuity, interdependence, impermanence and mutability, democracy, necessity for free consent, and moral progress that determined the progress of human history. |
| www.archives.upenn.edu /histy/people/1800s/cheyney_edwd_potts.html (1002 words) |
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