1921 Indianapolis 500 1921 Indianapolis 500 The 9th International 500-Mile Sweepstakes Race was held at the Indianapolis Motor Speedway on Monday, May 30, 1921. Ralph DePalma dominated yet another early running of the 500, but again fails to win. He led 109 laps, and had a two-lap lead at the halfway point. A connecting rod broke, and he dropped out on lap 112. DePalma retires with one win, and 612 laps led in the "500." His laps led record would not be matched for 67 years until Al Unser, Sr. tied it in 1987. Tommy Milton won the first of two 500 victories.
1963 Indianapolis 500 1963 Indianapolis 500 The 47th International 500-Mile Sweepstakes was held at the Indianapolis Motor Speedway in Speedway, Indiana on Thursday, May 30, 1963. Parnelli Jones took his only Indy 500 win despite his car (nicknamed "Calhoun") spewing oil from a cracked overflow tank for many laps, which allegedly caused at least one driver to spin and crash. USAC officials put off black-flagging Jones after car owner J. C. Agajanian ran down pit lane and convinced them that the oil leak was below the level of a known crack and would not leak any further. Lotus owner Colin Chapman, whose English-built,