topic

• History92
• Railroads59
• Administrative and political divisions21
• Indian reservations16
• Surveys12
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name

• American Civil War (1861-1865)29
• United States. Army. Corps of Topographical Engineers19
• United States Coast Survey16
• Bien, Julius, 1826-190915
• Gannett, Henry, 1846-191414
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collection

place

• Virginia45
• Canada22
• Mexico16
• Fredericksburg (Va.)11
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genre

• Maps290
• Topographic maps12
• Military maps9
• Manuscript maps6
• Diagrams4
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publisher

• publisher not identified17
• U.S. Geological Survey11
• Corps of Topographical Engineers10
• J.H. Colton8
• U.S. Light-House Board8
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division

type

• cartographic290
• still image8
• text4