In 1887 a twenty-one-year-old newspaperman named George Nellis (1865-1948) rode a bicycle from Herkimer, New York, to San Francisco in seventy-two days, surpassing the transcontinental bicycle record by several weeks. He averaged fifty miles a day pedalling a fifty-two-inch, high-wheeled Columbia Expert "ordinary" bicycle with a tubular steel frame and hard rubber tires, and he lost twenty-three pounds in the process. He bicycled ever westward...