Complete the following sentence: A substantial number of non-championship races were sanctioned by the AAA Contest Board, namely from the periods from 1902<unk>1904, 1906<unk>1915, and 1917<unk>1920. <unk> <unk> <unk>
1913, 1914, 1915 and 1919.<unk> Various other non-championship races have been conducted over the years by AAA, USAC, CART, and IRL from 1920<unk>2008. The winners from those races are specifically not included in the main table above.<unk> The winners from those races are specifically not included in the main table above. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️