The collection consists of incoming correspondences (1894-1967) to members of the Grierson family, primarily Joseph Scheuerle and Margaret J. Grierson.

Robert F. Morgan (1929-2015), a prominent Helena, Montana artist and historian, was involved with the Montana Historical Society for several decades and produced over 3,000 paintings throughout his fine art career. This collection consists of awards & certificates (1948-2006, undated), correspondence (1980-2008), photographic material (1866-2011, undated), subject files (1993-2005, undated), and writings (2007) related to Morgan’s life and career.