- Galactic Central – A source of pulp magazine bibliographical information.
- FictionMags Index – Index of fiction magazines with an emphasis on the late 19th and early 20th centuries.
- Internet Speculative Fiction Database – Crowd sourced bibliographic data: author bibliographies, publication bibliographies, award listings, magazine content listings, anthology and collection content listings, and forthcoming books.
- Pulp Fiction Database – A pulp fiction database hosted by the Albin O. Kuhn Library and Gallery.
- Locus Index to Science Fiction – An index of science fiction publications from 1984-2007.
- Pulp Fiction at the Library of Congress – Pulp fiction available on microfilm at the Library of Congress.
- Library of Congress Rare Books and Special Collections – Pulp fiction and dime novels located in the Library of Congress’ special collections.
- Encyclopedia of Science Fiction – The freely available online 3rd edition of essential encyclopedia.
- Stanford’s Dime Novel and Story Paper Collection – Stanford University’s dime novel and story paper collection with historical background and some etexts.
- Miskatonic University Library – A good site for all things Lovecraftian, including scans of Weird Tales covers and material on writers who knew and influenced him.
- Howard Works – A bibliographic database of Robert E. Howard’s work.
- Doc Savage Organized – A great source of bibliographic information on The Man of Bronze.
- Thrilling Detective – A reference source for fictional detectives and mystery publications.
- Wold Newton Universe – A massive chronology tracing and intermingling the histories of several literary heroes.