Filter by Collections

• 38 Ecology and Natural Resources
• 38 WI Geological and Natural History

Filter by Formats

• 38 Still image

Filter by Topics

• 19 Men
• 19 People
• 16 Geologists
• 13 Creeks
• 13 Rivers
• 13 Streams
• 13 Water
• 12 Exposed rock
• 8 Cliffs
• 6 Grenville limestone
• 6 Limestone
• 5 Joints
• 4 Rock hammers
• 3 Boats
• 3 Chasms
• 3 Cryptozoon
• 3 Fossils
• 3 Gneiss
• 3 Transportation
• 3 Vehicles
• 2 Falls
• 2 Glacial landforms
• 2 Gorges
• 2 Hills
• 2 Landscapes
• 2 Potsdam
• 1 Bedding
• 1 Camps
• 1 Fences
• 1 Shale

Filter by Authors

• 1 Hudson, G. H.
• 1 Kummel

Filter by Languages

• 38 English

Filter by Places