Pere Marquette Caboose No. A-986 was built in November 1941 by the St. Louis Car Company of St. Louis, Missouri. It served as a rolling office, complete with a coal stove, ice box, drinking water tank, sink, and sleeping bunks. The conductor used its desk space for paperwork, and the rear brakeman sat in the cupola to watch over the train while it was in motion. The car was equipped with the unique Duryea Cushioned Underframe and at one time was used on the nightly Cannonball freight train that ran from Muskegon, through Grand Haven, to Grand Rapids. It was retired from service in 1981 and donated to the City of Grand Haven by the Chessie System in 1983. Its specifications were all-steel construction, length 32 feet, width 10 feet, height 14 feet, and weight 45,000 pounds.