Anderson, James Arthur. Out of the Shadows: A Structuralist Approach to Understanding the Fiction of H. P. Lovecraft (ISBN978-0-8095-3002-1) A close reading of Lovecraft's fiction. The Milford Series, Popular Writers of Today, Vol. 75; Wildside Press, 2011.
Burleson, Donald R. Lovecraft: Disturbing the Universe (ISBN0-8131-1728-3) This book is the only volume to date analyzing Lovecraft's literature from a deconstructionist standpoint. University Press of Kentucky, November 1990.
Eddy, Muriel and C. M. Eddy Jr.The Gentleman From Angell Street: Memories of H. P. Lovecraft (ISBN978-0-9701699-1-4), is a collection of personal remembrances and anecdotes from two of Lovecraft's closest friends in Providence. The Eddys were fellow writers, and Mr. Eddy was a frequent contributor to Weird Tales.
Hill, Gary. The Strange Sound of Cthulhu: Music Inspired by the Writings of H. P. Lovecraft (ISBN978-1-84728-776-2).
Joshi S. T. The Rise and Fall of the Cthulhu Mythos (Mythos Books, 2008) is the first full-length critical study since Lin Carter's to examine the development of Lovecraft's Mythos and its outworking in the oeuvres of various modern writers.
Joshi, S. T. "H. P. Lovecraft: Alone in Space," chapter 3 in Emperors of Dreams: Some Notes on Weird Poetry by S. T. Joshi (Sydney: P'rea Press, 2008: ISBN978-0-9804625-3-1 (pbk) and ISBN978-0-9804625-4-8 (hbk)), discusses some of Lovecraft's weird poetry.
Ludueña, Fabián, H.P. Lovecraft. The Disjunction in Being (translation and epilogue by Alejandro de Acosta), New York, Schism, 2015 (ISBN978-1-5058-6600-1). A study of Lovecraft's conceptions about philosophy and literature.
Other significant Lovecraft-related works are An H. P. Lovecraft Encyclopedia by Joshi and David S. Schulz; Lovecraft's Library: A Catalogue (a meticulous listing of many of the books in Lovecraft's now scattered library), by Joshi; Lovecraft at Last, an account by Willis Conover of his teenage correspondence with Lovecraft; Joshi's A Subtler Magick: The Writings and Philosophy of H. P. Lovecraft.
Lovecraft's prose fiction being published as corrected texts were released by Arkham House in the 1980s, and many other collections of his stories have appeared, including Ballantine Books editions and three Del Rey editions. The three collections published by Penguin, The Call of Cthulhu and Other Weird Stories, The Thing on the Doorstep and Other Weird Stories, and The Dreams in the Witch House and Other Weird Stories, incorporate the modifications made in the corrected texts as well as the annotations provided by Joshi.
Some of Lovecraft's writings are annotated with footnotes or endnotes. In addition to the Penguin editions mentioned above and The Annotated Supernatural Horror in Literature, Joshi has produced The Annotated H. P. Lovecraft as well as More Annotated H. P. Lovecraft, both of which are footnoted extensively.
An Epicure in the Terrible (Fairleigh Dickinson University Press, 1991), edited by David E. Schultz and S. T. Joshi is an anthology of 13 essays on Lovecraft (excluding Joshi's lengthy introduction) on the centennial of Lovecraft's birth. The essays are arranged into 3 sections; Biographical, Thematic Studies and Comparative and Genre Studies. The authors include S. T. Joshi, Kenneth W. Faig, Jr, Jason C. Eckhardt, Will Murray, Donald R. Burleson, Peter Cannon, Stefan Dziemianowicz, Steven J. Mariconda, David E. Schultz, Robert H. Waugh, Robert M. Price, R. Boerem, Norman R. Gatford and Barton Levi St. Armand.
The Intersection of Fantasy and Native America: From H. P. Lovecraft to Leslie Marmon Silko edited by Amy H. Sturgis and David D. Oberhelman (Mythopoeic Press, 2009: ISBN978-1-887726-12-2).
Locke, John. The Thing's Incredible: The Secret Origins of Weird Tales (Off-Trail Publications, 2018, ISBN1-935031-25-2). A history of the first two years of Weird Tales (1923–24), the book contains extensive information on Lovecraft's introduction to and growing association with the magazine under the Henneberger/Baird regime. Issues covered include the acceptance of his early submissions, his role in the 1924 reorganization, and his recruitment as editor.