"The Merman," copyright (c) 1938 by Street & Smith Publications, Inc., for Astounding Science Fiction, December 1938. Copyright renewed 1966 by L. Sprague de Camp.
"Employment." copyright (c) 1939 by Street & Smith Publications, Inc., for Astounding Science Fiction, May 1939. Copyright renewed 1966 by L. Sprague de Camp.
"The Gnarly Man," copyright (c) 1939 by Street & Smith Publications, Inc., for Unknown, June 1939. Copyright renewed 1966 by L. Sprague de Camp.
"Nothing in the Rules," copyright (c) 1939 by Street & Smith Publications, Inc., for Unknown, July 1939. Copyright renewed 1966 by L. Sprague de Camp.
"The Hardwood Pile," copyright (c) 1940 by Street & Smith Publications, Inc., for Unknown, September 1940. Copyright renewed 1968 by L. Sprague de Camp.
"The Reluctant Shaman," copyright (c) 1947 by Standard Magazines, Inc., for Thrilling Wonder Stories, April 1947.
"The Inspector's Teeth," copyright (c) 1950 by Street & Smith Publications, Inc., for Astounding Science Fiction, April 1950. Copyright renewed 1977 by L. Sprague de Camp.
"The Guided Man," copyright (c) 1952 by Better Publications, Inc., for Startling Stories, October 1952.
"Judgment Day," copyright (c) 1955 by Street & Smith Publications, Inc., for Astounding Science Fiction, August 1955.
"A Gun for Dinosaur," copyright (c) 1956 by Galaxy Publishing Corporation, Inc., for Galaxy Science Fiction, March 1956.
"Reward of Virtue," copyright (c) 1970 by Mercury Press, Inc., for The Magazine of Fantasy and Science Fiction, September 1970.
"The Emperor's Fan," copyright (c) 1973 by Random House, Inc., for Astounding.
"The Ameba," copyright (c) 1973 by L. Sprague de Camp.
"The little Green Men," copyright (c) 1976 by L. Sprague de Camp.
"Two Yards of Dragon," copyright (c) 1976 by Lin Carter for Flashing Swords No.3.