Two Peter Helck Collection photos of National racing cars, at the Speedway in Indianapolis. He captioned the photo above as 1909, with Merz on the left and Atkin on the right in the car with the lowered drivetrain, as was the one we have seen Oldfield driving in the past.
The photo below seems to be dated incorrectly by the photographer with the wrong year, as Helck has it captioned and dated as 1909-1910 again with Johnny Atkin at the wheel, along with his mechanic Howdy Wilcox who later went on to his own driving career. The ten miles in the caption would refer to a ten mile sprint race. Photos courtesy of Racemaker Press.