Colonel Markesan and Less Pleasant People is a collection of stories by American authors August Derleth and Mark Schorer writing in collaboration. It was released in 1966  by Arkham House in an edition of 2,405 copies.
Colonel Markesan and Less Pleasant Companions is a compilation of tales by American authors August Derleth and Mark Schorer working together. It was issued in 1966 by Arkham House with an initial print count of 2,405 copies.