Opportunity.

Personal Publishing.

Autodidactism.

The Five-Foot Shelf.

Sources:

Peter Dzwonkoski, ed., American Literary Publishing Houses, 1900-1980: Trade and Paperback;

Dictionary of Literary Biography, volume 46 (Detroit: Bruccoli Clark/Gale, 1986);

Emanuel Haldeman-Julius, The First Hundred Million (New York:Simon & Schuster, 1928);

John Tebbel, A History of Book Publishing in the United States, volume 3 (New York: Bowker, 1978).