SF Encyclopedia Picture Gallery
H F Heard. The Lost Cavern (New York: Vanguard Press, 1948) [coll: hb/Maas]
Image courtesy of Clute Science Fiction Library at Telluride
H F Heard. The Lost Cavern (New York: Vanguard Press, 1948) [coll: hb/Maas]
Image courtesy of Clute Science Fiction Library at Telluride