Collector's Library of the Unknown
Collector's Library of the Unknown is a 12-book series with 12 released primary works first released in 1882 with contributions by Ignatius L. Donnelly, Sylvan Muldoon, Upton Sinclair, Harry Price, John G. Fuller, Harry Houdini, and J. Allen Hynek.
12 Collector's Library of the Unknown
1882 • 2 Readers • 490 pages
12 Collector's Library of the Unknown
1929 • 1 Reader
12 Collector's Library of the Unknown
1940 • 1 Reader • 255 pages
12 Collector's Library of the Unknown
1882 • 2 Readers • 490 pages • 5
12 Collector's Library of the Unknown
1966 • 1 Reader • 350 pages
12 Collector's Library of the Unknown
1966 • 1 Reader • 465 pages
12 Collector's Library of the Unknown
1972 • 1 Reader • 276 pages
12 Collector's Library of the Unknown
1882 • 1 Reader • 490 pages
12 Collector's Library of the Unknown
1972 • 1 Reader • 294 pages • 4
12 Collector's Library of the Unknown
2002 • 1 Reader • 352 pages
12 Collector's Library of the Unknown
2011 • 1 Reader