Big Blue Book collection

This collection contains 81 booklets from the Big Blue Book series edited by American social reformer and writer E. Haldeman-Julius and published by the Haldeman-Julius Company of Girard, Kansas. The collection includes booklets dating from 1927 to 1951, with the bulk from 1947 to 1951. The titles in the collection are primarily on topics related to free thought, superstition, humanism, religion, sex, psychology, health, relationships, self-improvement, and history. More than thirty different authors are represented, including a number by sexologist Dr. David O. Cauldwell and freethought writer Joseph McCabe.

The booklets are 8.5 x 5.5 inches, with colored paper wrappers; many have the name "Leo Rosenthal" stamped on the inside front cover. Entries for each imprint in the contents list contain the following information (when known): publisher's number; title; date; and author(s).