Materials related to Secondary Universe 4, including a pamphlet, receipt, calendar of events, and memo; correspondence mentioning Thomas Clareson and WALRUS; a statement by Thomas Clareson, Fred Lerner, Darko Suvin; “What Are We Really Talking About? or, Science Fiction and the Genological Jungle” by Dr. Darko Suvin; and “Russian Science Fiction Literature and Criticism 1956 – 1970: a Bibliography” by Darko Suvin.