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He lived in Washington, D.C. from 1912 to 1930, part of this time working as an assistant curator of mineralogy for the U. S. National Museum, and also for the Bureau of Chemistry of the United States Department of Agriculture.
His professional career in anthropology began in 1927, when he obtained a position as aide to Ales Hrdlicka in the U.S. National Museum Division of Physical Anthropology.
He served first as a research anthropologist for the Bureau of American Ethnology before being appointed Curator of North American Ethnology in the U.S. National Museum (later the National Museum of Natural History), Smithsonian Institution.