Columbia subject headings:
Harvard subject headings:
Camp Papago Park (Ariz.)--History.
Prisoner-of-war escapes--Arizona--History--20th century.
Prisoners of war--Germany--History--20th century
Prisoners of war--United States--History--20th century
Tunnels--Arizona--History--20th century.
World War, 1939-1945--Prisoners and prisons, American.
Princeton subject headings:
Camp Papago Park (Ariz.)--History.
Prisoner-of-war escapes--Arizona--History--20th century.
Prisoners of war--Germany--History--20th century.
Prisoners of war--United States--History--20th century.
Tunnels--Arizona--History--20th century.
World War, 1939-1945--Prisoners and prisons, American.