The Ancient EngineersW
The Ancient Engineers

The Ancient Engineers is a 1963 science book by L. Sprague de Camp, one of his most popular works. It was first published by Doubleday and has been reprinted numerous times by other publishers. Translations into German and Polish have also been published. Portions of the work had previously appeared as articles in the magazines Fate, Isis and Science Digest.

Ancient Ruins and ArchaeologyW
Ancient Ruins and Archaeology

Ancient Ruins and Archaeology is a 1964 science book by L. Sprague de Camp and Catherine Crook de Camp, one of their most popular works. It was first published by Doubleday and has been reprinted numerous times by other publishers. Paperback editions since 1972 have generally reverted to the title Citadels of Mystery, which was the de Camps' original working title. Translations into French, German and Portuguese have also appeared. Portions of the work had previously appeared as articles in the magazines Astounding Science Fiction, Fate, Frontiers, Natural History Magazine, Other Worlds Science Stories, Science Fiction Quarterly, and Travel.

Antarctic ConquestW
Antarctic Conquest

Antarctic Conquest: the Story of the Ronne Expedition 1946-1948 is a 1949 science book by Norwegian-American Antarctic explorer Finn Ronne and science fiction writer L. Sprague de Camp, published in hardcover by G. P. Putnam's Sons. The role of de Camp, who was commissioned as a ghost writer to recast Ronne's manuscript into publishable form, is uncredited. Ronne's working title was reportedly "Conquering the Antarctic".

The Ape-Man WithinW
The Ape-Man Within

The Ape-Man Within is a 1995 science book by L. Sprague de Camp, published in hardcover by Prometheus Books.

The Blade of ConanW
The Blade of Conan

The Blade of Conan is a 1979 collection of essays edited by L. Sprague de Camp, published in paperback by Ace Books. The material was originally published as articles in George H. Scithers' fanzine Amra. The book is a companion to Ace’s later volume of material from Amra, The Spell of Conan (1980). Most of the material in the two volumes, together with some additional material, was reprinted from three previous books issued in hardcover by Mirage Press; de Camp’s collection The Conan Reader (1968), and the de Camp and Scithers-edited anthologies The Conan Swordbook (1969). and The Conan Grimoire (1972).

Blond Barbarians and Noble SavagesW
Blond Barbarians and Noble Savages

Blond Barbarians and Noble Savages is a 1975 collection of essays on the fantasy writers Robert E. Howard and H. P. Lovecraft by science-fiction writer L. Sprague de Camp, first published by T-K Graphics. It was reissued in 1986 by Borgo Press as number 2 in its Essays on Fantastic Literature series.

The Conan GrimoireW
The Conan Grimoire

The Conan Grimoire is a 1972 collection of essays, poetry and fiction edited by L. Sprague de Camp and George H. Scithers, published in hardcover by Mirage Press. The essays were originally published as articles in Scithers' fanzine Amra. The book is a companion to Mirage’s previous two volumes of material from Amra, The Conan Reader (1968) and The Conan Swordbook (1969). Most of the material in the three volumes, together with some additional material, was later reprinted in two de Camp-edited paperback anthologies from Ace Books; The Blade of Conan (1979) and The Spell of Conan (1980).

The Conan ReaderW
The Conan Reader

The Conan Reader is a 1968 essay collection by L. Sprague de Camp, published in hardcover by Mirage Press. The essays were originally published as articles in George H. Scithers' fanzine Amra. Mirage subsequently published two companion volumes of essays from The Conan Swordbook (1969) and The Conan Grimoire (1972). Most of the material in the three volumes, together with some additional material, was later reprinted in two de Camp-edited paperback anthologies from Ace Books; The Blade of Conan (1979) and The Spell of Conan (1980).

The Conan SwordbookW
The Conan Swordbook

The Conan Swordbook is a 1969 collection of essays edited by L. Sprague de Camp and George H. Scithers, published in hardcover by Mirage Press. The essays were originally published as articles in Scithers' fanzine Amra. The book is a companion to Mirage’s other two volumes of material from Amra, The Conan Reader (1968) and The Conan Grimoire (1972). Most of the material in the three volumes, together with some additional material, was later reprinted in two de Camp-edited paperback anthologies from Ace Books; The Blade of Conan (1979) and The Spell of Conan (1980).

Dark Valley DestinyW
Dark Valley Destiny

Dark Valley Destiny: the Life of Robert E. Howard is a biography of the writer Robert E. Howard by science-fiction writer L. Sprague de Camp in collaboration with Catherine Crook de Camp and Jane Whittington Griffin, first published in hardcover by Bluejay Books in December 1983, and in trade paperback by the same publisher in May 1986. An E-book edition was published by Gollancz's SF Gateway imprint on September 29, 2011 as part of a general release of de Camp's works in electronic form.

Darwin and His Great DiscoveryW
Darwin and His Great Discovery

Darwin and His Great Discovery is a science book for young adults by L. Sprague de Camp and Catherine Crook de Camp, first published by Macmillan in 1972.

The Day of the DinosaurW
The Day of the Dinosaur

The Day of the Dinosaur is a science book by L. Sprague de Camp and Catherine Crook de Camp, illustrated with plates. It was first published in hardcover by Doubleday in 1968, and in paperback by Curtis Books in 1970 or 1971. A second hardcover edition was issued by Bonanza Books in 1985. The first chapter was reprinted as "One Day in the Cretaceous" in the de Camps's collection Footprints on Sand.

Elephant (de Camp book)W
Elephant (de Camp book)

Elephant is a 1964 science book by L. Sprague de Camp, published by Pyramid Books as part of The Worlds of Science series.

Energy and PowerW
Energy and Power

Energy and Power is a 1962 science book for children by L. Sprague de Camp, illustrated by Weimer Pursell and Fred Eng, published by Golden Press as part of The Golden Library of Knowledge Series. It has been translated into Portuguese and Spanish.

Engines (book)W
Engines (book)

Engines: Man's Use of Power, from the Water Wheel to the Atomic Pile is a science book for children by L. Sprague de Camp, illustrated by Jack Coggins, published by Golden Press as part of its Golden Library of Knowledge Series in 1959. A revised edition was issued in 1961, and a paperback edition in 1969. The book has been translated into Swedish, Norwegian, Finnish, Portuguese, and German.

The Evolution of Naval WeaponsW
The Evolution of Naval Weapons

The Evolution of Naval Weapons is a United States government textbook by L. Sprague de Camp. It was first published in a 53-page edition by the Training Activity section of the Bureau of Naval Personnel in August 1947 as NAVPERS 91066. A 1949 edition of 67 pages was designated NAVPERS 91066-A. The work was credited to the Bureau rather than de Camp. The 1947 edition was reproduced from a mixture of standard sized typed and mimeographed sheets, and was stapled between blue paper covers. The 1949 edition was printed, with the illustrations integrated with the text.

The Fringe of the UnknownW
The Fringe of the Unknown

The Fringe of the Unknown is a science book by L. Sprague de Camp, first published in hardcover and paperback by Prometheus Books in 1983.

Great Cities of the Ancient WorldW
Great Cities of the Ancient World

Great Cities of the Ancient World is history book by American writer and essayist L. Sprague de Camp, published by Doubleday in 1972. It was reissued by Dorset Press in 1990. It has also been translated into German.

The Great Monkey TrialW
The Great Monkey Trial

The Great Monkey Trial is a book on the Scopes Trial by L. Sprague de Camp, first published in hardcover by Doubleday in 1968. The book is a non-fiction account of the trial, as well as its social and political context and impact. This history of the trial was based on the archives of the A.C.L.U., assorted newspaper files, correspondence and interviews with over a dozen of those present at the trial, books and magazine articles written on trial, and a couple of visits to Dayton. The book also contains several political cartoons published at the time of the trial. Several critics have referred to the book as the definitive or comprehensive account of the Scopes Trial.

The Heroic Age of American InventionW
The Heroic Age of American Invention

The Heroic Age of American Invention is a science book for children by L. Sprague de Camp, published by Doubleday in 1961. It was reprinted in 1993 by Barnes & Noble under the alternate title The Heroes of American Invention. The book has been translated in Portuguese.

Inventions and Their ManagementW
Inventions and Their Management

Inventions and Their Management is a science book by Alf K. Berle and L. Sprague de Camp. It was based on A Course on Inventing and Patenting by Howard Wilcox and Alf K. Berle, a series of nine papers presented by New York University in cooperation with Inventors Foundation, Inc., issued from 1933-1934. The Berle/de Camp version was published by the International Textbook Company in July 1937. It was reprinted, revised, in September 1940. A second edition was issued by the same publisher in April 1947 and was reprinted, revised, in January 1948, with a third printing in June 1948 and a fourth in June 1950. A third edition was issued by the same publisher in November 1951 and was reprinted, revised, in 1954. An additional printing was issued by Laurel Publishing in 1957. The work was revised and reissued under the new title Inventions, Patents, and Their Management by Van Nostrand in 1959. It was reprinted by Litton Educational publishers in 1968. The work has been translated into Japanese.

Lands BeyondW
Lands Beyond

Lands Beyond is a study of geographical myths by L. Sprague de Camp and Willy Ley, first published in hardcover by Rinehart in 1952, and reissued by Barnes & Noble in 1993. It has been translated into French, Spanish, Portuguese, and Italian. It was the winner of the 1953 International Fantasy Award for nonfiction.

Literary Swordsmen and SorcerersW
Literary Swordsmen and Sorcerers

Literary Swordsmen and Sorcerers: The Makers of Heroic Fantasy is a work of collective biography on the formative authors of the heroic fantasy genre by L. Sprague de Camp (1907-2000), first published in 1976 by Arkham House in an edition of 5,431 copies. Nine chapters (2-10) are revisions from a series of ten articles, also titled "Literary Swordsmen and Sorcerers," that initially appeared in the magazine Fantastic and the fanzine Amra between 1971 and 1976. A French edition was issued in May 2010 under the title Les pionniers de la fantasy, and an ebook edition was issued in June 2014 by Gateway/Orion.

Lost ContinentsW
Lost Continents

Lost Continents: The Atlantis Theme in History, Science, and Literature is a study by L. Sprague de Camp that provides a detailed examination of theories and speculations on Atlantis and other lost lands, including the scientific arguments against their existence. It is one of his most popular works. It was written in 1948, and first published serially in the magazine Other Worlds Science Fiction in 1952-1953; portions also appeared as articles in Astounding Science Fiction, Galaxy Science Fiction, Natural History Magazine, and the Toronto Star. It was first published in book form by Gnome Press in 1954; an updated edition was published by Dover Publications in 1970. De Camp revised the work both for its first book publication and for the updated edition.

Lovecraft: A BiographyW
Lovecraft: A Biography

Lovecraft: A Biography is a 1975 biography of the writer H. P. Lovecraft by science-fiction writer L. Sprague de Camp, first published in hardcover by Doubleday in February 1975.

Man and PowerW
Man and Power

Man and Power: the Story of Power from the Pyramids to the Atomic Age is a science book for children by L. Sprague de Camp, illustrated with documents and photographs, and with paintings by Alton S. Tobey, first published in hardcover by Golden Press in 1961.

The Miscast BarbarianW
The Miscast Barbarian

The Miscast Barbarian: a Biography of Robert E. Howard is a biography by science-fiction writer L. Sprague de Camp, first published in hardcover and trade paperback in 1975 by Gerry de la Ree.

The Ragged Edge of ScienceW
The Ragged Edge of Science

The Ragged Edge of Science is a science book by L. Sprague de Camp, illustrated by Don Simpson. It was first published by Owlswick Press in 1980.

Rubber Dinosaurs and Wooden ElephantsW
Rubber Dinosaurs and Wooden Elephants

Rubber Dinosaurs and Wooden Elephants: Essays on Literature, Film, and History is a 1996 essay collection by L. Sprague de Camp, published in hardcover by Borgo Press as no. 26 in the series I.O. Evans Studies in the Philosophy & Criticism of Literature. The title essay "Rubber Dinosaurs and Wooden Elephants" was originally published in the magazine Analog Science Fiction and Fact, in the issue for mid-December 1987.

Science-Fiction HandbookW
Science-Fiction Handbook

Science-Fiction Handbook, subtitled The Writing of Imaginative Fiction, is a guide to writing and marketing science fiction and fantasy by L. Sprague de Camp, "one of the earliest books about modern sf." The original edition was published in hardcover by Hermitage House in 1953 as a volume in its Professional Writers Library series. A revised edition, by L. Sprague de Camp and Catherine Crook de Camp, titled Science Fiction Handbook, Revised, was published in hardcover by Owlswick Press in 1975 and as a trade paperback by McGraw-Hill in 1977. An E-book version of the revised edition was published by Gollancz's SF Gateway imprint on April 30, 2014.

The Spell of ConanW
The Spell of Conan

The Spell of Conan is a 1980 collection of essays, poems and fiction edited by L. Sprague de Camp, published in paperback by Ace Books. The material was originally published as articles in George H. Scithers' fanzine Amra. The book is a companion to Ace's earlier volume of material from Amra, The Blade of Conan (1979). Most of the material in the two volumes, together with some additional material, was reprinted from three previous books issued in hardcover by Mirage Press; de Camp's collection The Conan Reader (1968), and the de Camp and Scithers-edited anthologies The Conan Swordbook (1969). and The Conan Grimoire (1972).

Spirits, Stars, and SpellsW
Spirits, Stars, and Spells

Spirits, Stars, and Spells: The Profits and Perils of Magic is a 1966 history book by L. Sprague de Camp and Catherine Crook de Camp, published by Canaveral Press. The book sold slowly, and the remaining stock was taken over by Owlswick Press and sold under its own name with new dust jackets in 1980. It has been translated into Polish.

The Story of Science in AmericaW
The Story of Science in America

The Story of Science in America is a 1967 science book by L. Sprague de Camp and Catherine Crook de Camp, illustrated by Leonard Everett Fisher, published by Charles Scribner's Sons. It has been translated into Spanish, Portuguese, Burmese and French.

Time and Chance: An AutobiographyW
Time and Chance: An Autobiography

Time and Chance: an Autobiography is the autobiography of science fiction and fantasy writer L. Sprague de Camp, first published in hardcover by Donald M. Grant, Publisher, Inc. in 1996. An E-book edition was published by Gollancz's SF Gateway imprint on September 29, 2011 as part of a general release of de Camp's works in electronic form.

To Quebec and the StarsW
To Quebec and the Stars

To Quebec and the Stars is a collection of seventeen essays written by H. P. Lovecraft, assembled and edited by L. Sprague de Camp, who came across them in the course of his research for his biography of Lovecraft. The collection was first published in hardcover by Donald M. Grant, Publisher, Inc. in 1976.