Collection of science fiction stories, first published in 1964 under the title "Five-Odd." Introduction by the editor and these stories: The Dead Past (1956) by Isaac Asimov; Something Strange (1960) by Kingsley Amis; Unit (1957) by J. T. McIntosh; Gone Fishing (1961) by James H. Schmitz; Big Ancestor (1954) by F. L. Wallace.
Used availability for Groff Conklin's Five-Odd
June 1972 : UK Hardback
September 1973 : UK Paperback