topic

• Water-supply11
• Aqueducts7
• Watersheds7
• Cities and towns4
• Reservoirs4
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name

• New York (State). Board of Health5
• Chas. Hart & Sons4
• Welcke, Robert A4
• New York (N.Y.). Aqueduct Commission3
• Craven, Alfred Wingate, 1810-18792
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collection

• Maps of New York City and State13

place

• New York (State)13
• Croton Aqueduct (N.Y.)11
• New York9
• Westchester County6
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genre

• Maps13
• Topographic maps2

publisher

• State Board of Health4
• Aqueduct Commission?2
• Croton Aqueduct Board2
• American Public Health Association1
• Aqueduct Commission1
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division

type

• cartographic13