Grimshawe's Post Office in Whiteside Cove occupied a building five feet wide by six feet long from 1878 to 1953 and at one time was claimed to be the smallest post office in the United States. In 1935, Judge George Benet received mail there from Warren Alexander. Thomas Bumgarner, son of Reverend Frank and Molina Bumgarner, filled out a money order there; he later served in the Army during World War II throughout the Pacific campaign and died at age twenty-six. A circa 1952 view places Grimshawe's Post Office on top of Whiteside Mountain, and in 1952 cars could be driven to the plateau near the top of the mountain. The post office was discontinued in 1953.