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 World War II-era munitions depot and a postwar aircraft-testing area. We additionally examined federal involvement in environmental cleanup efforts and transportation development at Quil Ceda, as well as analyzing legislative histories relevant to the case, including the Indian Trader Statutes and the 1970 Tulalip Leasing Act. This research formed the basis for HRA’s expert reports, one of which was submitted as written testimony at trial. HRA also provided deposition testimony in the case.