Columbia subject headings:
Library of Congress.
Library resources--Washington (D.C.)
World War, 1939-1945--Library resources.
Harvard subject headings:
Library of Congress
Library resources--Washington (D.C.)
World War, 1939-1945--Libraries.
Princeton subject headings:
Library of Congress.
Library resources--Washington (D.C.)
World War, 1939-1945--Library resources.