This omnibus contains 1 novel and a collection(Worlds of Wonder) containing 2 novels and 1 novella.
• Unbound signatures from the FPCI printings of Stapledon's collection Worlds of Wonder and Leinster's novel Murder Madness were combined to form this omnibus.
• The 1979 edition of Currey states that 500 copies were so bound. The 2002 edition of Currey revises this number to 300 which matches other sources (Eshbach, Chalker/Owings).
• Each work has a separate title page and half-title page from the original sheets. No new title page was added for the omnibus and the title is from the jacket and spine.
• Jack L. Chalker credited the cover artist as Laura Ruth Crozetti in "On SF Publishing: Son of Daddy!" from Fantasy Newsletter No. 62, September 1983. However, he later indicated that it was "Walter" in Chalker/Owings which matches the credit on the front jacket flap.
