Built in 1927 in Lusk on land donated by the local American Legion chapter, the Wyoming National Guard Armory was funded through special legislation at a cost of $15,000 and closed out 40 years of National Guard use there on December 18, 1967. Though originally planned only for a medical detachment, its design was enlarged to serve a troop of cavalry or infantry. Constructed of brick and tile, it had two stories and a basement, with a bowling alley, pool room, shooting gallery, shower baths, officers' rooms, and a large meeting hall on the top floor. It first housed a medical attachment and later the Headquarters Detachment of Second Squadron, 115th Cavalry, Headquarters of Platoon Troop K 115th Cavalry, Company C of 116th Quartermaster Regiment, and 186th Quartermaster Depot Supply. The only time during those 40 years that it was not occupied by the National Guard was when the local National Guard was called to serve in Iran in WWII, when a Wyoming State Guard served there during their absence. After the State Guard was deactivated, a Post War National Guard was formed in 1946. The building was also used by the Wyoming Civil Air Patrol for meetings and training, and it served the community in many other ways, including as a roller skating rink in the 1950’s, a dance hall in the 1960's and '70's for local bands such as Crimson Blues and the Tone Benders, and an art studio and classroom for local artists. In 1969 it was leased to the Niobrara Historical Society for use as a museum, and in 2003 it was deeded to Niobrara County.