HRA assisted the U.S. Forest Service in its defense against a claim brought by the Freedom from Religion Foundation that the agency’s approval of a special use permit allowing the placement of a statue of Jesus on the Whitefish Mountain Resort ski area in the early 1950s violated the U.S. Constitution’s First Amendment.

As part of the General Streamwide Adjudication of the Gila River in Arizona, HRA conducted research pertaining to the history of the establishment of, and water use on, the Gila River Indian Reservation in Arizona.

HRA historians have worked with the Navajo Nation for nearly three decades on various aspects of the Nation’s water rights claims in the Little Colorado River (LCR) Basin in Arizona.

HRA is assisting the U.S. Department of Justice with historical research and expert witness testimony in litigation to determine whether the North Fork and Middle Fork of the Fortymile River in Alaska were navigable at the time of statehood.

As a part of litigation involving the taxation of business activities on Indian trust lands within the Tulalip Reservation, HRA historians researched the history of federal and tribal participation in the development of Quil Ceda Village, a tribally chartered and federally recognized municipality that formerly served as a WWII-era munitions depot and a postwar aircraft-testing area.

HRA assisted the attorneys who prosecuted a criminal case involving an attempted murder within the boundaries of the Red Lake Indian Reservation in Minnesota.