The Flint store and post office was built on this site in 1895 and was named after Moses E. Flint, an early homesteader who had served as a teamster with General Custer on the 1876 campaign against the Sioux that ended with the Battle of the Little Big Horn. Flint stood on a mail route from the old river town of LaGrace, Campbell County Seat from 1884-1888, to Mound City, the present Campbell County Seat, with mail carried on horseback twice weekly, and the store also served as a school classroom. The building was constructed by the five Parrott brothers and operated by their mother, Mrs. Sara Parrott, after the Parrott family moved to the area in 1884 and established homesteads on both sides of the present state border. In 1901 the Minneapolis, St. Paul and Sault Saint Marie Railroad, commonly known as the Soo Line, built a branch into Campbell County from a junction with its main line at Wishek, North Dakota. Instead of building to existing settlements, the Soo Line established Artas, Herreid, and Pollock along the Spring Creek Valley, and Pollock was named after R.Y. Pollock, a prominent and well respected homesteader. Residents of settlements around the new town of Pollock recognized that without rail service they would not thrive, and citizens of LaGrace and Vanderbilt began a mass migration to Pollock as soon as the rail line was completed. The Flint store was moved to Pollock and served as its first post office. In the 1950's Pollock itself had to be moved from its original location approximately 1-1/2 miles west of this site because flood control dams on the Missouri River created Lake Pocasse, which covered the original town site. Beginning in 1955, Pollock started its move to a new location on a hill above the water line, and the move was completed in 1960 just prior to the creation of Lake Pocasse.