I’ve always thought that Alvin’s Indian Heritage of America, published in 1968, was extraordinary in its examination of the Americas before contact. He started with languages. Ironically, it was often missionaries, intent on Christianizing and changing people, who learned indigenous languages, intent from that day through today’s Moody Bible Translators on giving them back scripture.
But some missionaries were captivated by language itself, as were some army officers, adventurers, and a few academics who described themselves as “ethnologists.” In 1891, Major John Wesley Powell—of Colorado River fame but then Director of Ethnology at the Smithsonian—submitted the seventh annual report to the Secretary of the Smithsonian, in which he described attempts at learning the proper names of North American Indian tribes and the classification of their languages. The volume published the field work of 1885-86, including the first classification of North American Indian languages. (see https://upload.wikimedia.org/wikipedia/commons/a/a5/Langs_N.Amer.png for a current language map)
Alvin picked up their work, and began Indian Heritage Read The Article