Alan Cressler:
Emerson Pit, Wayne County, Kentucky, Dan Calhoun 1
Alan Cressler:
Fisher Ridge Cave, Hart County, Kentucky, Manuel Beers 1
Alan Cressler:
Fisher Ridge Cave, Hart County, Kentucky, Ryan Moran 1
Alan Cressler:
Floyd Collins Signature, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky 1
Alan Cressler:
Floyd Collins Signature, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky, Marion Smith 1
Alan Cressler:
Grundy Petroglyph Shelter, McCreary County, Kentucky, Randy Boedy 1
Alan Cressler:
Historic Signatures, Monument Passage, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky 1
Alan Cressler:
Historic Signatures, Monument Passage, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky 2
Alan Cressler:
Historic Signatures, Monument Passage, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky, Marion Smith 1
Alan Cressler:
Macrocera nobilis, with trapped Neaphaenops tellkampfi tellkampfi, Kangaroo Trail, inside the Daleo Entrance, Roppel Cave, Hart County, Kentucky 2
Alan Cressler:
Neaphaenops tellkampfi tellkampfi, Fisher Ridge Cave, Hart County, Kentucky 1
Alan Cressler:
Prehistoric Art, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky 2
Alan Cressler:
Prehistoric Art, Salts Cave, Mammoth Cave National Park, Hart County, Kentucky 3
Alan Cressler:
Reese Pit, Wayne County, Kentucky, Brian Killingbeck and Dan Calhoun 1
Alan Cressler:
Skaggs Creek Saltpeter Cave, Party Passage, Barren County, Kentucky, Marion O. Smith 1
Alan Cressler:
mammoth cave historic entrance mammoth cave national park edmonson co ky 2