Collector's Library of the Unknown
Collector's Library of the Unknown is a 15-book series with 15 released primary works first released in 1882 with contributions by Ignatius L. Donnelly, Frederick Bligh Bond, Upton Sinclair, Sylvan Muldoon, Harry Price, John G. Fuller, J. Allen Hynek, Harry Houdini, and Thomas Joseph Sugrue.
15 Collector's Library of the Unknown
1882 • 5 Readers • 490 pages
15 Collector's Library of the Unknown
1929 • 1 Reader
15 Collector's Library of the Unknown
1940 • 1 Reader • 255 pages
15 Collector's Library of the Unknown
1882 • 2 Readers • 490 pages • 5
15 Collector's Library of the Unknown
1966 • 3 Readers • 350 pages
15 Collector's Library of the Unknown
1966 • 1 Reader • 465 pages
15 Collector's Library of the Unknown
1972 • 4 Readers • 276 pages
15 Collector's Library of the Unknown
1882 • 1 Reader • 490 pages
15 Collector's Library of the Unknown
1972 • 1 Reader • 294 pages • 4
15 Collector's Library of the Unknown
2002 • 1 Reader • 352 pages
15 Collector's Library of the Unknown
2011 • 1 Reader
15 Collector's Library of the Unknown
2003 • 505 pages
15 Collector's Library of the Unknown
1972 • 1 Reader • 322 pages
15 Collector's Library of the Unknown
1918 • 1 Reader • 176 pages