Known Space (Publication Order) is a 34-book series with 34 released primary works first released in 1965 with contributions by Larry Niven, Dean Ing, Jerry Pournelle, S.M. Stirling, Poul Anderson, Greg Bear, Donald Kingsbury, Gregory Benford, Mark O. Martin, Hal G.P. Colebatch, Paul Chafe, Edward M. Lerner, Tom Weiner, Hal Colebatch, and Jessica Q. Fox.