Correspondence, 1930s-1980s; journals, 1934-2008; publications and reprints; and photographs. Includes letters from Ernest Jones, Anna Freud and others relating to Freud and hypnotist Franz Polgar. Also, a letter from Jacques Lipchitz. Also, a gold medal from the Society for Clinical and Experimental Hypnosis, awarded to Dr. Schneck in 1958. Copy of the book Brothers: the origins of the Henry W. and Albert A. Berg collection inscribed by Schneck to the archives with an explanatory note.