1849 engraving of John James Abert.
John James Abert (1788–1863) was a United States soldier. He headed the Corps of Topographical Engineers for 32 years, during which time he organized the mapping of the American West.
Size: 2884px × 3470px
Photo credit: © Old Paper Studios / Alamy / Afripics
License: Licensed
Model Released: No
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