Picture Postcards -- See Postcards Here are entered works both on cards sold by post offices with stamps already printed on them, usually mailable at rates lower than those for letters in envelopes, as well as on commercially printed cards, usually having a picture printed on one side, to which a stamp must be affixed for mailing.
--subdivision Posters under names of individual persons and corporate bodies, classes of persons, ethnic groups, topical subjects and individual wars, e.g. World War, 1939-1945--Posters
