As I noted in the last post, the 1914-1925 period saw a dramatic increase in the number of cars on the road. If you've visited the Circa 1920 Exhibition at the Benton County Historical Museum, then you've seen photos and read a story about what an adventure it was to travel, given the condition of Oregon's roads. Getting flat tires or becoming stuck in the mud were commonplace, for as David Peterson Del Mar notes in his Oregon's Promise, “In 1914, 86 percent of the state's thirty-seven…