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Bones of earliest mammals being studied at Smithsonian Institution. Washington, D.C., May 8. One of the largest collections of the bones of some of the earliest mammals are now being studied and classified at the Smithsonian Institution. Dr. C. Lewis Gazin, Smithsonian paleontologist shown in the ph
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Credit lineBones of earliest mammals being studied at Smithsonian Institution. Washington, D.C., May 8. One of the largest collections of the bones of some of the earliest mammals are now being studied and class. 1937-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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