topic

• Lakes7
• Water-supply2
• Aqueducts1
• Hydrography1
• More Less

name

• Birge, E. A. (Edward Asahel), 1851-19508
• Wisconsin Geological and Natural History Survey8
• Smith, Leonard S. (Leonard Sewall), 1864-19477
• Trippe, H. M4
• Hering, Rudolph, 1847-19232
• More Less

collection

• Maps of North America10

place

• Wisconsin8
• Pennsylvania2
• Philadelphia2
• Philadelphia (Pa.)2
• Philadelphia Region2
• More Less

genre

• Maps10
• Bathymetric maps8
• Diagrams5
• Thematic maps2
• Charts1

publisher

• Wisconsin Geological and Natural History Survey6
• Philadelphia Water Department2
• Wisconsin Geological and Natural HIstory Survey2

division

type

• cartographic10
• still image4