topic

• History72
• Railroads44
• Canals18
• Roads13
• Administrative and political divisions12
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name

• American Civil War (1861-1865)23
• United States. Army. Corps of Topographical Engineers20
• United States Coast Survey16
• Colton, J. H. (Joseph Hutchins), 1800-189313
• Atwood, John M., approximately 1818-10
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collection

place

• Virginia41
• Mexico19
• United States -- Maps18
• Canada16
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genre

• Maps226
• Military maps9
• Manuscript maps5
• Nautical charts5
• Diagrams3
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publisher

• publisher not identified12
• Corps of Topographical Engineers10
• J.H. Colton8
• s.n8
• Office of Surveys and Maps, Army of the Potomac7
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division

• Map Division226

type

• cartographic226
• still image6
• text1