topic

• Nautical charts10
• Geology4
• Sewerage4
• Administrative and political divisions3
• Prairies3
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name

• United States Coast Survey10
• Bache, A. D. (Alexander Dallas), 1806-18679
• District of Columbia. Board of Sanitary Engineers3
• Alden, James, 1810-18772
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collection

• Maps of North America30

place

• Baltimore (Md.)5
• Washington (D.C.)4
• Baltimore3
• Louisiana3
• Maryland3
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genre

• Maps30
• Nautical charts9
• Bathymetric maps3
• Geological maps3
• Aerial views1
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publisher

• U.S. Coast Survey7
• A. Hoen & Co2
• U.S. Coast Survey Office2
• U.S. Geological Survey2
• U.S. Govt. Print. Off2
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division

type

• cartographic30