I assume that this would have been after Ford quit racing and this was a car that was raced by an individual?
Any guess as to what the other car might be?
Thank you for posting the great pic. Boone Iowa is just north of Des Moines IA (for those somewhat familiar with Iowa).
As for Ford racing, Frank Kulick and a few other Ford drivers were still driving and winning races. Kulick again had great success with the 410 cubic inch Ford Special racer in 1912, winning the prestigious Algonquin Hill Climb outside Chicago for the second year in a row.
In 1913 Henry Ford attempted to enter the Ford Special in the Indy 500. When told he would need to ad 1,000 lbs. to the racer to qualify, he reportedly said "we're making racers, not trucks", and I've found no evidence of Ford Motor Company sponsored racing after that (however, never say never )