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Two Spiders — Early American Natural History Study

Uncle Sam Needs Nurses — Red Cross Nursing Service, 1941–1945

Understanding the Arts — Shari Weisberg, 1936–1941

Unstalked Crinoids — Siboga Expedition Plate XXIV

Unstalked Crinoids — Siboga Expedition Plate XXVII

Visit Beautiful Sea Cliff — WPA World’s Fair Poster, 1938–1939

Walking Skeleton and Studies of the Bones

Wall Design for a New York Restaurant — Winold Reiss

War Gardens Over the Top — Maginel Wright Enright, 1919

Winter — Penrhyn Stanlaws, 1907

Yellowstone Ranger Naturalist Service — C. Don Powell, c. 1938

Zion National Park — C. Don Powell, c. 1938

Zoological Anatomy Studies — Plate 46

Zoological Anatomy — Plate 1

Zoological Development Studies — Plate 32