This was the first bibliography and guide to the American mass market paperback book, and it remains one of the most definitive. The major index is by author, and lists: author, title, publisher, book number, year of publication, and cover price. The title index lists titles and authors only. The publisher index provides a history of that imprint, with addresses, number ranges, and general physical description of the books issued. This is the place that all study of the American paperback must begin.

Provides an introduction to American pulp fiction during the twentieth century with brief author biographies and lists of their works.