42 items. Includes correspondence to Gaddis and others from Stephen Crozier, Milton Meltzer, James E. Perkins, Ralph E. Shikes, Lucille Conrad, Cyril Clemes, Calvin Kentfield, Charles B. MacDonald, Stephen Goode, James Putnam, C.E. Woolman, Kirk Polking, Joyce Bermel, Peter Conway, Howard B. Gotlieb, Candida Donadio, John Kuehl, L. Rust Hills, Morrie Goldfischer, Arthur A. Cohen, Sherman Stambaugh, Barbara Kopala, Hillel A. Schiller, and others.