Mounted skeleton of Triceratops elatus - Osborn, Henry Fairfield (The American Museum of Natural History, 1933)
Caption title. - "Sept. 6, 1933.". - Skeleton is a composite of four individuals; basis of skeleton discovered by Barnum Brown and Peter C. Kaisen in Montana, skull by Charles H. Sternberg in Wyoming, both in 1909
Includes bibliographical references (page 14)