topic

• Charts, diagrams, etc1
• Floods1

name

• Lee, Alex. Y1
• Pennsylvania Railroad1

collection

• Maps of North America1

place

• Conemaugh Valley1
• Conemaugh Valley (Pa.)1
• Johnstown (Cambria County, Pa.)1
• Pennsylvania1
• More Less

genre

• Aerial views1
• Maps1
• Physical maps1
• Pictorial maps1

publisher

division

type

• cartographic1
• still image1