The work consists of an introduction and three essays, "Lovecraft and the Aryans," "Howard and the Celts," and "The Heroic Barbarian" (a revision of the author's earlier "Barbarians I Have Known"), together with bibliographies and an index. The second and third essays also appeared in de Camp's anthology of pieces on Howard, The Spell of Conan (1980). All three were reprinted in the later de Camp collection Rubber Dinosaurs and Wooden Elephants (1996).
The book was reviewed by Darrell Schweitzer in Fantasiae v. 3, no. 6, June 1975, J. Rosenbaum in Science Fiction Review Monthly 5, July 1975, Brian Stableford in Vector 81, May 1977, and Don D'Ammassa in Science Fiction Chronicle v. 10, no. 5, February 1989.