Frank R. Zebley (1883-1960) was a Delaware native collector, photographer, author, and one-time speaker of the Delaware House of Representatives. He published Along the Brandywine and The Churches of Delaware. The Frank R. Zebley photograph albums includes nearly 1500 black and white photographs from the city of Wilmington, locations around Delaware, southeastern Pennsylvania, and other places of interest in the mid-Atlantic region.

The collection consists of 46 nitrate negatives and one folio filled with 46 vertical aerial photographs of New Castle County, Delaware and the surrounding areas, including nearby southern Chester County, Pennsylvania. The flight altitude was approximately 25,000 feet and the resulting vertical photographs had a scale of approximately 1 inch to 3,100 feet.

The Savery family of Chester County, Pennsylvania, produced two generations of eminent mechanical engineers. Savery family papers consists of materials of the eldest son William H. Savery's (1865-1949) diaries, his father Thomas H. Savery (1837-1910) correspondence and notebooks documenting his career as a mechanical engineer, and the documents relating to Savery/Webb family property near Longwood Gardens, Hamorton and Parkerville, Pennsylvania.

The Mill at Anselma is a custom grain mill in Anselma, Chester County, Pennsylvania. This collection consists of seven oral history interviews conducted in 1982 and 1986 with individuals familiar with the Mill at Anselma. Most are members of the Collins family (the last residents of the mill), as well as other Chester County citizens. The interviews mainly focus on the mill, how it operated, and its service to the county, but also include numerous personal stories recounting life in early twentieth century rural Pennsylvania.

Thomas H. Savery (1837-1910) was president of Pusey, Jones and Company, a ship builder and manufacturer of papermaking machinery in the late nineteenth and early twentieth centuries. Thomas H. Savery, Jr. (1871-1930), the second son of Savery, followed in his father's footsteps in the pulp and paper industry. The records consist of two private journals from the youth of Thomas H. Savery and his son, Thomas H. Savery, Jr.