The 1941 AAA Championship Car season consisted of three races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 1. There was also one non-championship event held at Langhorne, Pennsylvania. The AAA National Champion was Rex Mays and the Indianapolis 500 co-winners were Floyd Davis and Mauri Rose - the second such occasion in history. The National Championship was not held again until 1946, due to World War II.
The 1940 AAA Championship Car season consisted of three races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 2. There was also one non-championship event in Langhorne, Pennsylvania. The AAA National Champion was Rex Mays and the Indianapolis 500 winner was Wilbur Shaw.
The 1939 AAA Championship Car season consisted of three races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 2. There was also one non-championship event in Springfield, Illinois. The AAA National Champion and Indianapolis 500 winner was Wilbur Shaw.
The 1938 AAA Championship Car season consisted of two races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 10. There were also two non-championship events. The AAA National Champion and Indianapolis 500 winner was Floyd Roberts.
The 1920 AAA Championship Car season consisted of 5 races, beginning in Beverly Hills, California on February 28 and concluding in Beverly Hills on November 25. The AAA National Champion and Indianapolis 500 champion was Gaston Chevrolet. The 1920 season later became a source of confusion and misinformation for historians when in 1926 the AAA published a revisionist history, naming another driver as the season's point champion.
The 1937 AAA Championship Car season consisted of three races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 12. There were three non-championship events. The AAA National Champion and Indianapolis 500 winner was Wilbur Shaw.
The 1936 AAA Championship Car season consisted of four races, beginning in Speedway, Indiana on May 30 and concluding in Westbury, New York on October 12. There were three non-championship events. The AAA National Champion was Mauri Rose, and the Indianapolis 500 winner was Louis Meyer.
The 1935 AAA Championship Car season consisted of six races, beginning in Speedway, Indiana on May 30 and concluding in Langhorne, Pennsylvania on October 13. There was one non-championship event. The AAA National Champion and Indianapolis 500 winner was Kelly Petillo.
The 1934 AAA Championship Car season consisted of four races, beginning in Speedway, Indiana on May 30 and concluding in Inglewood, California on December 23. The AAA National Champion and Indianapolis 500 winner was Bill Cummings.
The 1933 AAA Championship Car season consisted of three races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 9. There was one non-championship event. The AAA National Champion and Indianapolis 500 winner was Louis Meyer.
The 1932 AAA Championship Car season consisted of six races, beginning in Speedway, Indiana on May 30 and concluding in San Leandro, California on November 13. The AAA National Champion was Bob Carey and the Indianapolis 500 winner was Fred Frame.
The 1931 AAA Championship Car season consisted of seven races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 12. There was one non-championship race. The AAA National Champion and Indianapolis 500 winner was Louis Schneider.
The 1930 AAA Championship Car season consisted of eight races, beginning in Langhorne, Pennsylvania on May 3 and concluding in Syracuse, New York on September 6. The AAA National Champion and Indianapolis 500 winner was Billy Arnold.
The 1929 AAA Championship Car season consisted of five races, beginning in Speedway, Indiana on May 30 and concluding in Tyrone, Pennsylvania on September 2. There were also three non-championship races. The AAA National Champion was Louis Meyer and the Indianapolis 500 winner was Ray Keech.
The 1928 AAA Championship Car season consisted of seven races, beginning in Speedway, Indiana on May 30 and concluding in Salem, New Hampshire on October 12. There were also three non-championship races. The AAA National Champion and Indianapolis 500 winner was Louis Meyer.
The 1927 AAA Championship Car season consisted of 11 races, beginning in Culver City, California on March 6 and concluding in Salem, New Hampshire on October 12. There were also three non-championship races. The AAA National Champion was Peter DePaolo and the Indianapolis 500 winner was George Souders.
The 1926 AAA Championship Car season consisted of 24 races, beginning in Miami Beach, Florida on February 22 and concluding in Pineville, North Carolina on November 11. There were also 7 non-championship races. The AAA National Champion was Harry Hartz and the Indianapolis 500 winner was Frank Lockhart.
The 1925 AAA Championship Car season consisted of 11 races, beginning in Culver City, California on March 1 and concluding in the same location on November 29. There were also eight non-championship races. Peter DePaolo won the AAA National Championship, as well as the Indianapolis 500.
The 1923 AAA Championship Car season consisted of 8 races, beginning at Beverly Hills, California on February 25, 1923, and concluding at the same location on November 29, 1923. The AAA National Champion was Eddie Hearne, and the Indianapolis 500 winner was Tommy Milton.
The 1921 AAA Championship Car season consisted of 20 races, beginning in Beverly Hills, California on February 27 and concluding in San Carlos, California on December 11. There was also one non-championship race. The AAA National Champion and Indianapolis 500 winner was Tommy Milton.
Jimmy Murphy 
