Behrends, Steve. Clark Ashton Smith. Starmont Reader's Guide 49. Mercer Island, WA: Starmont House, 1990.
Cockcroft, Thomas G.L. The Tales of Clark Ashton Smith: A Bibliography. Lower Hutt, New Zealand: Cockcroft, Nov 1961 (500 copies). The first published bibliography on Smith; superseded by Donald Sidney-Fryer's Emperor of Dreams (1978) – see below.
Connors, Scott. The Freedom of Fantastic Things: Selected Criticism on Clark Ashton Smith. NY: Hippocampus Press, 2006.
de Camp, L. Sprague. "Sierra Shaman: Clark Ashton Smith," in Literary Swordsmen and Sorcerers: The Makers of Heroic Fantasy. Sauk City,. WI: Arkham House, 1976, 211-12.
Fait, Eleanor. "Auburn Artist-Poet Utilizes Native Rock in Sculptures.". Sacramento Union (21 Dec 1941), 4C.
Haefele, John D. "Far from Time: Clark Ashton Smith, August Derleth, and Arkham House." Weird Fiction Review No 1 (Fall 2010), 154–189.
Hilger, Ronald. One Hundred Years of Klarkash-Ton. Averon Press, 1996.
Klarkash-Ton: The Journal of Smith Studies No 1 (June 1988), Cryptic Publications. Edited by Steve Behrends. This journal was continued under a new title but with the numbering continued from No 1, thus the first issue of The Dark Eidolon: The Journal of Smith Studies, (Necronomicon Press) is numbered "2" (it appeared June 1989). There were only 3 issues in total. No 3 appeared in Dec 2002.
Lost Worlds: The Journal of Clark Ashton Smith Studies, Seele Brennt Publications. Edited by Smith's biographer
Scott Connors and Ronald S. Hilger. Issued annually, five numbers 2003–2008.
Morris, Harry O. (ed). Nyctalops magazine. Special Clark Ashton Smith issue, 96 pp. (1973)
Schultz, David E. and Scott Connors (ed). Selected Letters of Clark Ashton Smith. Sauk City, WI: Arkham House, 2003.
Schultz, David E and S.T. Joshi. The Shadow of the Unattained: The Letters of George Sterling and Clark Ashton Smith. NY: Hippocampus Press, 2005.
Sidney-Fryer, Donald. Emperor of Dreams: A Clark Ashton Smith Bibliography. West Kingston, RI: Donald M. Grant Publishers, 1978. A substantial work of scholarship but now over thirty years out of date. A quantity of more recent bibliographical information can be found at the Bibliography section of the Eldritch Dark site online (see External Links).
Sidney-Fryer, Donald. The Last of the Great Romantic Poets. Albuquerque NM: Silver Scarab Press, 1973.
Sidney-Fryer, Donald. Clark Ashton Smith: The Sorcerer Departs. West Hills, CA: Tsathoggua Press, Jan 1997. Dole: Silver Key Press, 2007. Updated/revised version of his essay in the Special CAS Issue of Nyctalops (see above under Morris).