In 1888, Benjamin Harrison campaigned for the Presidency in the manner common for candidates of his era: he stayed at home in Indianapolis and spoke to visiting delegations. In 1889, he traveled to Washington to take up residency in the White House, and made a few brief trips out of town. In 1890, he undertook a train journey lasting more than a week and covering nearly 2,700 miles, making stops and speeches in seven states. But in 1891, he did something no other President had done to that point: a transcontinental train journey lasting a month and covering more than 9,200 miles. On this...