William Milligan Sloane III
William Milligan Sloane III (15 August 1906 in Plymouth, Massachusetts – 25 September 1974 in New City, New York), also known simply as William Sloane, was an American author of fantasy and science fiction literature, and a publisher. Sloane is best known for his novel To Walk the Night. 
From 1955 until his death Sloane was the director of the Rutgers University Press in New Jersey. Before then, he had spent more than 25 years with several other publishers. He formed his own publishing concern, William Sloane Associates, in 1946.
William Milligan Sloane III married Julia Margaret Hawkins in 1929.  They had three children: William Curtis Sloane (born 1932), Jessie Miranda Sloane (born 1935), and Julie Ann Sloane (born 1945).
Groff Conklin described To Walk The Night as "a subtle, moving story of mood and character, written in the great tradition of British fantasy, even though the author is an American." Anthony Boucher praised the same novel for its "rich warm character-drawing, disturbing subtlety, [and] splendid sense of vast besuty in the midst of terror." P. Schuyler Miller ranked it as "one of the great classics of modern science fiction." Hartford Courant reviewer George W. Earley praised it as "a wondrous blending of science and occultism guaranteed to unnerve the most blase of readers."
- Back Home (1931), a ghost play in one act
- Runner in the Snow (1931), a play of the supernatural in one act
- Crystal Clear (1932), a fantasy play
- Ballots for Bill (1933), co-authored by William Ellis Jones
- The Silence of God (1933), a play for Christmas in one act
- Art for Art's Sake (1934)
- The Invisible Clue (1934), written under the name William Milligan
- Gold Stars for Glory (1935)
- To Walk the Night (1937), a science fiction novel with horror elements
- The Edge of Running Water (1939), a science fiction novel with horror elements; adapted as the motion picture The Devil Commands
- Space, Space, Space: Stories About the Time When Men Will Be Adventuring to the Stars (1953), a collection edited by Sloane
- Stories for Tomorrow: An Anthology of Modern Science Fiction (1954), a collection edited by Sloane ISBN 4-87187-302-1
- The Craft of Writing (1979), edited by Julia H. Sloane
- American Authors and Books. 1640 to the present day. 3d revised edition. By W.J. Burke and Will D. Howe. Revised by Irving Weiss and Anne Weiss. New York: Crown Publishers, 1972.
- Contemporary Authors. Volumes 53-56. Detroit: Gale Research, 1975.
- Who Was Who in America. Volume 6, 1974-1976. Chicago: Marquis Who's Who, 1976.
- Twentieth-Century Science-Fiction Writers. 3d edition. Edited by Noelle Watson and Paul E. Schellinger. Chicago: St. James Press, 1991.
- The Encyclopedia of Science Fiction. Edited by John Clute and Peter Nicholls. New York: St. Martin's Press, 1993.
- St. James Guide to Science Fiction Writers. 4th edition. Edited by Jay P. Pederson. Detroit: St. James Press, 1996.
- Howard, John. "A Look at The Edge of Running Water by William Sloane." All Hallows 29 (2002).
- U.S. Census, 1910, State of Pennsylvania, County of Montgomery, enumeration district 137, pp. 1-A, 1-B, family 14.
- Passenger list of the S.S. Lapland, port of New York, 9 September 1928.
- Social Security Death Index.
- "William Sloane, 68, Publisher, Is Dead", The New York Times, Sept. 26, 1974, p. 32.
- Robert Bloch, "Robert Bloch’s Ten Favorite Horror-Fantasy Novels" in The Book of Lists : horror. Amy Wallace, Scott Bradley, and Del Howison, New York : Harper, 2008. ISBN 9780061537264 (p. 253)
- Biography of William M. Sloane, Princeton University Library Manuscripts Division.
- New York Times, September 26, 1974
- "Galaxy's 5 Star Shelf", Galaxy Science Fiction, March 1955, p.96
- "Recommended Reading," F&SF, January 1955, p.94.
- Miller, P. Schuyler. "The Reference Library," Astounding Science-Fiction, August 1955, p.151.
- "Science Fiction", The Hartford Courant, October 16, 1955, p. SM22
- William M. Sloane papers, 1931–1979: Finding Aid, Princeton University Library Manuscripts Division, 2002.