Pete Henderson, one of Canada's earliest-known drivers, began his racing career. He headed south to the US in 1914 and joined the top teams to compete in the board-track series, a competition of early sprint cars. A native of Fernie, BC, Henderson had his first AAA championship race at Des Moines Speedway in 1915 for the Duesenberg team. In 1916, he came second at Des Moines while driving a Maxwell as a teammate of Rickenbacker on the Prest-O-Lite team. In October of 1917 he won the board-track race at Chicago. He finished in the top 10 at Indy in 1916 and 1920.