Colorful African-American boxer (1878–1946) who held the world heavyweight championship from 1908 to 1915 and whose achievements in and out of the ring created an unprecedented storm of racially charged controversy. Johnson’s tumultuous personal life and career were dramatized in the classic play (and subsequent film) The Great White Hope. Vintage pencil signature, “Jack Johnson, Former Champ,” on the reverse of an off-white 3.5 x 2 Parkway Inn liquor store business card. Some scattered light toning and soiling, and a small tape remnant to left edge, otherwise fine condition. Auction LOA Steve Grad/PSA/DNA and R&R COA.