Additions, consisting of papers relating to Schuchardt's peace activism with the Plowshares movement including news clippings related to various activities and protests of the group, general information about the movement and its founders, Phillip and Daniel Berrigan, other religiously inspired peace movements, and a small amount of mailings and ephemera. Also included are papers documenting Schuchardt's activities within Plowshares and other peace organizations, such as Veterans for Peace, consisting of correspondence and newspaper articles.

Additionally, there are family papers (1874-1945) of Schuchardt's grandfather Rudolf and great-uncle William which consist of correspondence, news clippings, and publications relating to their professional life as electrical engineer and city planner, respectively. Also included is a Schuchardt family history written by William during World War II that traces some branches of the family back to the 1700s.