Library of Congress. Copyright Office, Catalog of copyright entries, third series… (1971)
“ L1214. King Features Syndicate, a division of the Hearst Corporation (PWH) ; 16Dec74; R593681.R593725.Forever Amber. 15 reels. © 22Oct47; L1390. Twentieth Century-Fox Film Corporation (PWH) ; 19Dec74; R593725.R593726.Nightmare alley. 12 reels. © 18Oct47; L1399. Twentieth Century-Fox Film Corporation (PWH) ; 19Dec74; R593726.R593727.The Invisible wall. 8 reels. © 15Oct47; L1401. Twentieth Century-Fox Film Corporation (PWH) ; 19Dec74; R593727.R593728.The Foxes of Harrow. 12 reels. © 1Oct47; L1437. Twentieth Century-Fox Film Corporation (PWH) ; 19Dec74; R593728. ”
