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 collaborative anthology of stories by American writers August Derleth and Mark Schorer, published in 1966 by Arkham House with a limited edition of 2,405 copies.