He has authored many works, and is a Professor Emeritus of History at Lewis & Clark College in Portland, Oregon.
Beckham earned his bachelor's degree in history and biology at the University of Oregon in 1964.
He earned a master's degree and PhD in history/anthropology at University of California, Los Angeles in 1966 and 1969, respectively.
He has been called as an expert witness in many land-use issues, including reservations, casinos, and fishing rights.
Additionally, Beckham has helped to develop many museums and exhibits both in the Pacific Northwest and around the world.