(Left to right): Walter S. Adams, James H. Jeans, and Edwin Powell Hubble at a model of the 100" telescope in the Hale Observatories Library, Pasadena. The men are wearing suits. The telescope model rests on a table. Bookshelves and books line the walls behind the men. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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