United States Copyright Office, Catalog of Copyright Entries/Third Series… (1970)
“ NATIONAL WILDLIFE FEDERATION.NATIONAL WILDLIFE FEDERATION. American eider duck, from the 1943 wildlife conservation stamps. Author of renewable matter: National Wildlife Federation, employer for hire of Walter Weber. ”
United States Copyright Office, Catalog of Copyright Entries/Third Series… (1970)
“ Fossil plants of the great coal age, fern leaf types of Sphenopterideae, by H. Snyder. (Turtox classroom chart, CR 160) © 17Aug42; I-31149. General Biological, Inc. (PWH) ; 21Jul70; R488374. Fossil plants of the great coal age, Gymnospermous seeds. (Turtox classroom chart, CR 151) © 17Aug42; I-31158. General Biological, Inc. (PWH) ; 17Jul70; R488238. Fossil plants of the great coal age, Lepidophloios, by H. Snyder. (Turtox classroom chart, CR 156) © 17Aug42 I-31153. General Biological, Inc. (PWH) ; 17Jul70; R488233. Fossil plants of the great coal age, Megaphyton, by H. Snyder. ”
United States Copyright Office, Catalog of Copyright Entries/Third Series… (1970)
“ Landscape with cattle crossing a bridge, by Gainsborough. © 17Sep42; H2469. Frick Collection (PWH) ; 4Sep70; R490859. The man in the iron cage, by William Blake. (In The Pilgrim's progress) © 4Aug42; H2417. Frick Collection (PWH) ; 1Jul70; R487490. The man who dreamed of the judgment day, by William Blake. (In The Pilgrim's progress) © 4Aug42; H2416. Frick Collection (PWH) ; 1Jul70; R487489. Mr. Worldly Wiseman, by William Blake. (In The Pilgrim's progress) © 4Aug42; H2422. Frick Collection (PWH) ; 1Jul70; R487495. ”
