The collection contains letters written from members of the Robertson and Riggs families. Many were sent to Amanda Robertson, Mary Ann Robertson, and James P. Robertson. Correspondents include Thomas J. Riggs of La Grange, Illinois; Elizabeth L. Hall; V. G. Smith of Cass County, Illinois; Libbie Teeple of Pluckemin, New Jersey; E. R. Metcalf of Whitehall and Jacksonville, Illinois; and the Davis family of Howell and Brooks, Oregon. Most letters relate to family and friends, but some contain details of daily life and local politics. Of particular interest is a letter from Metcalf, dated November 18, 1860, discussing the recent elections and the issue of slavery in Illinois state politics.