Elizabeth Roberts Lippincott (1888-1979) was a Quaker genealogist from Moorestown, New Jersey. The collection contains chiefly genealogical and card files relating to the Lippincott, Shinn, Thorne, and related Quaker families of Moorestown and elsewhere, together with correspondence, journals, and essays, and collected materials relating to Quaker history, particularly various Friends Meetings and Moorestown Friends School.

Joseph Steward Middleton (1839-1928) was a member of Chesterfield Monthly Meeting (Orthodox). This collection contains genealogical materials on the Middleton, Thorne, and Steward families of New Jersey which were collected by Joseph S. Middleton from various sources. It includes notes compiled by another Middleton family genealogist, Catherine H. Middleton.