Increasing literacy rates and advanced printing technology gave rise to the pulp magazine in the late 19th century. Affordable, disposable, and commercially in-demand, the fiction magazines remained popular through the mid 20th century, and are now frequently cited by researchers as culturally and historically significant documents. This work is a comprehensive index of American pulp magazines. Entries are organized alphabetically by magazine title, and offer bibliographic data including author, volume/issue numbers, dates of publication, publisher, and a brief categorization. Each entry also includes a helpful list of current library holdings, if any, among American, Canadian, and European libraries.