The first five books were published by Popular Library. They were reprinted in 1982 by Warner Books and several times throughout the 1980s, who also published the other books in the series at the same time as the Popular Library editions, which were identical.
The initial five books were published by Popular Library. In 1982, they were reissued by Warner Books alongside the other books in the series during the 1980s, all of which featured identical editions to those originally published by Popular Library.