Acrey, Bill P.
History: The Land and the People. Shiprock, NM: Toohnii Press.
1961 Spin A Silver Dollar: The Story of a
Desert Trading-Post. New York: The Viking Press.
1962 The Indian Traders. Norman, OK:
University of Oklahoma Press.
Underhill, Ruth Murrary
Navajo. Norman, OK: University of Oklahoma Press.
Come the Navajo!. United States Department of the Interior: Haskell Press.
United States Federal Trade Commission
1973 The Trading Post System on the
Navajo Reservation: Staff Report to the Federal Trade Commissions. Washington D.C.: US Government Printing Office.