Personnel file of William A. Mercer, who served as the Superintendent of the Carlisle Indian School from July 1, 1904 to February 1, 1908. Before coming to Carlisle, Mercer was Captain of the Seventh United States Cavalry, and was also considered to become Superintendent of the Carlisle Indian School in 1903.

The file contains employment-related correspondence, special orders of the Department of War related to Mercer's appointment, and a letter of resignation from Mercer.