topic

• Aqueducts1
• Reservoirs1
• Water-supply1

name

• Bowen & Co2
• United States. Army. Corps of Engineers2
• United States. Congress. Senate1

collection

• Maps of North America2

place

• Great Falls of the Potomac (Md. and Va.)1
• United States1
• Washington Aqueduct (Md. and Washington, D.C.)1

genre

• Maps2

publisher

division

• Map Division2

type

• cartographic2