The subject files bring together printed material, correspondence and memoranda, and a few mementos from Walker's government service. The printed material consists primarily of government reports on a wide variety of topics, including the WPA and other New Deal programs, economics, housing, World War II, and others. Walker also collected publications on topics relating to his hometown of Butte and the Montana mining industry. The correspondence concerns Walker's work on the board of the Roosevelt and Truman Presidential Libraries and as a member of the Gonzaga University Alumni Association. The mementos include a car flag and Walker's government identification.