Sportswoman (1927-2003) who became the first African-American woman to be a competitor on the world tennis tour and the first to win a Grand Slam title in 1956. Three personal checks drawn on Gibson’s “Special Account,” all filled out and signed by Gibson, all measuring 6 x 2.75, and all from early 1973. Expected stamps, with a bank stamp lightly affecting first name of each signature, otherwise fine condition. RRAuction COA.