A PRIVATE COSMOS 1968 Ace 1st Printing	A PRIVATE COSMOS 1970 Sphere 1st British Reprint	A PRIVATE COSMOS 1975 Sphere Reprint	A PRIVATE COSMOS 1977 Ace Reprint
A PRIVATE COSMOS 1981 Phantasia Press Hardcover Limited Signed	A PRIVATE COSMOS 1981 Phantasia Press Hardcover	A PRIVATE COSMOS included in THE WORLD OF TIERS Volume 2 1981 Book Club Hardcover	A PRIVATE COSMOS 1982 Sphere Reprint
A PRIVATE COSMOS 1984 Berkley Reprint	THE GATES OF CREATION included in THE WORLD OF TIERS Volume 1 1986 Sphere Trade Paperback	A PRIVATE COSMOS included in THE WORLD OF TIERS Volume 1 1996 Tor Hardcover	A PRIVATE COSMOS included in THE WORLD OF TIERS 2001 Book Club Hardcover