Starbound! was the sixth publication in Kenneth J. Krueger's The Space-Trails Series of science fiction pamphlets. It was published in 1954 under Krueger's Pegasus Publications imprint from Buffalo, New York, U.S.A.
The cover gives the subtitle "Poems of science-fiction, fantasy, and terror"; the title page gives the subtitle "poems of science/fantasy".
In his afterword, Krueger acknowledges that "this small booklet was more or less inspired by a similar venture of SSR Publications entitled Snowflakes in the Sun".