The collection contains 120 letters written by various members of Henry Clay Trumbull's family. The majority of the letters are between Trumbull and his parents and siblings. Several were written between his father and brother as well as between his mother and wife. The letters span 1844 to 1892, but the bulk are from 1851 to 1852 and 1864 to 1865. These cover part of Trumbull's time in Hartford and most of his Civil War service. They primarily deal with family news and requests but there is also information on religion, Connecticut state legislative action, and Trumbull's feelings towards those who paid for proxies during the war. Letters from April 1861 from Thomas Trumbull tell of his campaign to obtain letters of recommendation to support his application for the Consulship at Tunis.