Gimbels kept the Thanksgiving Day parade from 1920 through World War II then Macy's must have continued it after the war

When it first started in 1920, the Philadelphia parade called itself as the oldest Thanksgiving Day parade in the country. ... The Gimbels department store sponsored the first Thanksgiving Day parade held in 1920 as the Gimbels Thanksgiving Day Parade; it kept on going through World War II.
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