Norwegian American pioneer and skier John A. "Snowshoe" Thompson, through courage and perseverance, crossed the impassable winter Sierra Nevada mountains to carry mail, medicine, and supplies to settlers in Nevada beginning in January 1856 from this building, which was built in 1853. His dedication and service continued for many years and stood as an outstanding example of the courage and concern that characterized the citizenry of El Dorado County during the Gold Rush period and formed a foundation upon which modern society rests.