""In the late 1960s, he embarked on the revision of his early poetry with a view to its reissue," a project that resulted in a "Selected Poems" in 1972, and the first four volumes of a now ten-volume "Collected Poems" in 1980, all of which were published by Oberon Press.Souster has also written fiction under the pseudonyms of "Raymond Holmes" and "John Holmes", for which he has drawn on his Air Force experience.