"Established by Congress within the Smithsonian Institution in 1879, the Bureau of American Ethnology (initially the Bureau of Ethnology) was given the responsibility to conduct "anthropologic researches among the North American Indians" (Bureau of Ethnology, 1st Ann. Rep., xi) at a time when change was occurring very rapidly. The effort that followed lasted nearly a century and played a defining role in the development of American anthropology as a discipline"
Almost 450 volumes on geology, zoology, ichthyology, mammalogy, paleontology, animal behavior, forest ecology, and more are indexed. You still have to locate the physical item.