Since 1911, the Grand Prizes and the Vanderbilt Cup races were intertwined with each other, both within a week from each other. The schema here under shows both events over the whole period of 1904 – 1916. (The 1911 races are dealt with in the previous page, as both ran on the Savannah road course.)
   In 1912, both races were held on the Wauwatosa road course in Milwaukee. Both races were postponed by about two weeks, due to heavy rain which did the track no good at all. The Vanderbilt Cup race on October 2 was won by Ralph DePalma in a Mercedes, whereas the Grand Prize on October 5 went to Caleb Bragg in a Fiat. Tragically, two-time Grand Prize winner David Bruce-Brown lost his life in a practice accident for the Vanderbilt race; the poor comdition of the road was seen as the main cause for this so unfortunate and unnecessary fatal accident. Even at the Grand Prize, Ralph De Palma was involved in an accident, which he survived.
   1914 on the Santa Monica road course, saw Ralph De Palma in a Mercedes win the Vanderbilt Cup race on February 26. Two days later, Eddie Pullen in a Mercer won the Grand Prize. It was the first American car winning a Grand Prize. Both Ralph DePalma and Eddie Pullen were the game-makers in the two contests.
   1915 in San Francisco, where the Panama-Pacific International Exposition course was the stage for the combined Grand Prize + Vanderbilt Cup races. Both races were won by Dario (Darius) Resta in a Peugeot, hailing the up-to-then rather unknown race driver to a new star. Although the winning car was a Peugeot, now more American cars like Stutz, Maxwell and Duesenberg appeared in the races. The Vanderbilt Cup race was postponed a week due to bad weather.
After that, it was back to Santa Monica.
   1916 saw both races back again in Santa Monica as the last of this Prewar period. Held on two days in November 1916, when Dario Resta in a Peugeot, again, won the Vanderbilt race and Howdy Wilcox in a Peugeot won the Grand Prize.
(June 2026: (tbd) means that the aricle still is to appear. More to come; this page is under construction)