Cazenove Gardner Lee, Jr. (1882-1945) was a genealogist and prolific writer, who founded the Society of Lees of Virginia. This collection conists of photographs and negatives relating to family and career of Cazenove Gardner Lee, Jr. The images are primarily of various gunpowder mills and machinery.

Marguerite du Pont Lee (1862-1936) was a descendant of Pierre Samuel du Pont de Nemours (1739-1817) who founded the E.I. du Pont de Nemours & Company with his son Eleuthere Irenee du Pont (1771-1834) in 1802. The E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company. This small collection consists of four items belonging to Marguerite du Pont Lee. Two individual portraits, a photograph of a gate, and a decorative leaf.

Maurice du Pont Lee (1885-1974) was the General Advisor to the Chief Engineer of E.I. du Pont de Nemours & Company. The collection includes photographs of Maurice du Pont Lee's family members. The collection also includes a group of public relations photographs of Maurice du Pont Lee, dating from 1950 to 1969.