Bones of "Mysterious Beast"
Wonderful Wells
Explorer Finds Cave Men
Underground River
Illinois Cavern
Illinois Spelunk
Cave of the Giants
Reno, Nevada
Negro Hill, California
San Diego, California
Strange Eyeless Fish
Built by The Little People?
Crawford County, Indiana
Japanese Deros
Nakimu Caves
Josephine County, Oregon
Wonderful Cave In Iowa
Further Discoveries in Mammoth Cave
Churchward's Lemuria
Meagher County, Montana
Discovery of Mammoth Cave
"A Home of Elves and Sprites"
An Illinois Cave
The Library of Anhulwarra
German Cave
The Great Indiana Cave
Geologist Missing in
Nick-a-Jack Cave
Cave Temples of India
Amazing Toltec Ruins
The Cave of Luray
Mexican Mystery Race
Early Description of Mammoth Cave
"We Advise..."
"Under the Dome"
Buried Ancient Town
Ancient Mexican Ruins
Subterranean Sea
Subterranean City Found
Newly Found Pits
Over a Cavern...
Immense Underground Passage
Mysterious Cave with Strange Fish
Montana Mystery Cave
Obituary: Richard S. Shaver
A Fictional Description
Crystal Cave in Miniature
Grand Gulf Cavern
Spelunker Finds Mystery Fish
Faces in Stones Pre-date Shaver!
Human Remains Found in Huge Cave
Black Venus
Tunnel Linked to Druids
Subterranean Incan Dwellings Discovered
More on Incan Discoveries, 1939
Ancient Mile-Long Gallery Discovered Underground
Exploration of Cave With Halls & Waterfall
Remarkable River Beneath Texas
Underground City Explored in Grand Canyon
Unexplored Cave at Gran Quivira
Mexican Pyramids
Tunnels Found Under Harcourt House
Tunnels Connect Texas Missions
Florida Sinkholes
Another Pompeii
Cuban Subterranean Passages
Underground City of the Dead, Alexandria, Egypt
Ancient Buried City Nr. Moscow
Mysterious Toltec Ruins
Subterranean River Found in France
Underground Lake Discovered in Indiana
Deepest Cellar On Record
The Fire That Never Goes Out