Trapped! : the story of Floyd Collins /Format: [sound recording]
Author: Murray, Robert K.
Publisher: [Ashland, Or.] : Blackstone Audio, Inc.,
Date: p2009. This title can be found in 1 Iowa libraries.
Mammoth Cave and the Kentucky cave region /Author: Thompson, Bob.
Publisher: Charleston, SC : Arcadia,
Date: 2003 This title can be found in 1 Iowa libraries.
Mysteries undergroundFormat: [videorecording] /
Publisher: [Washington, D.C.] : National Geographic Video,
Date: c1997. This title can be found in 1 Iowa libraries.
Mysteries undergroundFormat: [videorecording] /
Publisher: [Washington, D.C.] : National Geographic Video,
Date: c1992. This title can be found in 1 Iowa libraries.
Caves and karst of Kentucky /Publisher: Lexington : Kentucky Geological Survey, University of Kentucky,
Date: 1985. This title can be found in 1 Iowa libraries.
Bibliography of karst geology in Kentucky /Author: Currens, James C.
Publisher: Lexington : Kentucky Geological Survey, University of Kentucky, Series XI,
Date: 1979. This title can be found in 1 Iowa libraries.
The caves beyond; the story of the Floyd Collins' Crystal Cave Exploration,Author: Lawrence, Joseph,
Publisher: New York, Funk & Wagnalls,
Date: 1955. This title can be found in 3 Iowa libraries.
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