topic

name

• New York (N.Y.). Aqueduct Commission2
• Valles, J. A2
• Welcke, Robert A2
• Worthen, W. E. (William Ezra), 1819-18972
• Cook, Frederick S1

collection

• Maps of New York City and State2

place

• Croton Aqueduct (N.Y.)2
• Croton River Watershed (N.Y.)2
• New York (State)2

genre

• Maps2
• Topographic maps2

publisher

• Robert A. Welcke, Photo-lith1

division

• Map Division2

type

• cartographic2