title: History of Mammoth Cave, emphasizing tourist development and medical experimentation under Dr. John Croghan.
authors.forename: S W
authors.initials: SW
authors.lastname: Thomas
authors.forename: E H
authors.initials: EH
authors.lastname: Conner
authors.forename: H A
authors.initials: HA
authors.lastname: Meloy
mesh_terms: D004470:Economics, Medical / Q000266:history*; D005101:Expeditions / Q000266:history*; D049711:History, Modern 1601-; D014195:Travel / Q000266:history*; D014481:United States