Ed. By Bruce Sloane (yes, Howard Sloane's son). Includes info on a wide range of subject including Histoplasmosis, Floyd Collins, Stephen Bishop, Caverns of Sonora,. By an amazing group of authors; Conn, Barr, Jackson, Aley, Meloy, Larson, Gurnee and more. 1975, 409pp, well illus, hb, w/dj.
 "Cavers Caves and Caving")
