Columbia subject headings:
Harvard subject headings:
Arizona--Biography.
Cattle trade--Arizona--History.
Cattle trade--Mexico--Sonora (State)--History.
Cowboys--Arizona--Biography.
Cowboys--Mexico--Sonora (State)--Biography.
Ranch life--Arizona--History.
Ranch life--Mexico--Sonora (State)--History.
Ranching--Arizona--History.
Ranching--Mexico--Sonora (State)--History.
Sharp, Robert L.
Sonora (Mexico : State)--Biography.
Princeton subject headings:
Arizona--Biography.
Cattle trade--Arizona--History.
Cattle trade--Mexico--Sonora (State)--History.
Cowboys--Arizona--Biography.
Cowboys--Mexico--Sonora (State)--Biography.
Ranch life--Arizona--History.
Ranch life--Mexico--Sonora (State)--History.
Sharp, Robert L.
Sonora (Mexico : State)--Biography.