NASCAR Junior Johnson autograph. 3 x 5 inches. Robert Glenn Johnson Jr., better known as Junior Johnson, was a NASCAR driver of the 1950s and 1960s. He won 50 NASCAR races in his career before retiring in 1966. In the 1970s and 1980s, he became a NASCAR racing team owner, winning the NASCAR championship with Cale Yarborough and Darrell Waltrip.