Dobyns worked with Native American tribes on land claims and a water rights case while he was a graduate student at the
University of Arizona in 1952. He continued this work over the next 50 years with various tribes. From 1952 to 1956, he gathered ethnohistorical and archaeological evidence for the
Hualapai Tribal Nation’s land claims case and acted as an expert witness before the U.S. Supreme Court with much of the information in his M.A. thesis being used in the Indian Claims Commission hearings. He also spent three decades working as a consultant for the Gila River Indian Community in their litigation over water rights. He joined the Cornell Peru Project in 1960 after earning his Ph.D. There he worked as a research coordinator from 1960 to 1962, and as a Peace Corps coordinator from 1962 to 1964, and coordinator of the Comparative Studies of Cultural Change program. He was also the Coordinator of the Andean Indian Community Research and Development project from 1963 to 1966, and the Associate Director of the Cornell Peru Project. Dobyns was made Director of the project in 1966 after the death of the former director, Allan R. Holmberg.
Teaching From 1949 to 1952 he was an instructor at Cornell University’s Field Laboratory in Applied Anthropology in Arizona and
New Mexico. In 1966 Dobyns became the Chairman of the Department of Anthropology at the
University of Kentucky. In 1970, he joined the staff of
Prescott College, Center of Man and Environment as a professor and later as the Vice-president for Academic Affairs. Between 1977 and 1979 he taught at the
University of Florida, Gainesville. Dobyns taught at the
University of Wisconsin–Parkside from 1974 to 1977 and also 1983 through 1984. In 1983 he directed seminars on Native American Historical Demography, funded by the
National Endowment for the Humanities (NEH). He was a professor at the
University of Oklahoma in 1989. Dobyns also worked as a senior researcher at the Bureau of Applied Research in Anthropology at the University of Arizona and on projects for the
National Park Service. Between 1980 and the early 1990s, he returned to the Newberry Library each summer to contribute to the NEH Summer Institute in
Native American Literature. ==North American Indian populations==