Columbia subject headings:
Harvard subject headings:
Powys, John Cowper, 1872-1963--Periodicals.
Powys, Llewelyn, 1884-1939--Periodicals.
Powys, Theodore Francis, 1875-1953--Periodicals.
Princeton subject headings:
Periodicals.
Powys, John Cowper, 1872-1963--Periodicals.
Powys, Llewelyn, 1884-1939--Periodicals.
Powys, Theodore Francis, 1875-1953--Periodicals.