Charles Findeisen (1919-2007) was an aerial photographer hobbyist turned professional and spent most of his life flying airplanes. Findeisen consulted for real estate development concerns, engineering firms, and construction companies among others. Virtually all of his work was in the tri-state region of New Jersey, Pennsylvania, and Delaware.

This collection contains his aerial photography from 1962 to 2000. It is comprised mostly of negatives but does include some photographs. Many of his subjects were photographed over time at regular intervals. This is particularly true of real estate development programs and building projects. But there is also one-off material of current events, local places, and landmarks.

Orlando Wootten (1909-1997) was the photographer for the Salisbury (Maryland) Daily Times and Wicomico Historical Society. Collection consists of documentary views of three flour and feeds mills from the Delmarva area

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.

Gilpin, Van Trump & Montgomery, Inc. provided insurance sales and service to property owners. The business was established in 1865 in Wilmington, Delaware, by businessman James Woolley (1818-1886). By the early-to-mid twentieth century, the company specialized in real estate sales and service, as well as mortgages, becoming Delaware's only full-service real estate organization. The records include minutes, corporate histories, publicity material, as well as information on company properties, and documents the company's rise from a small insurance company to a large, multi-service insurance, real estate, mortgage, and investment firm.

John G. Townsend Jr. (1871-1964) was a politician, a businessman, and a banker. He served as Governor of Delaware from 1917 to 1921 and as Delaware’s U.S. Senator from 1929 to 1941. He operated a lumber business, cannery, orchard, and then a large poultry farm called Townsend Inc. Farms. This small collection documents Townsend’s work in politics and in the poultry industry. There is a fair amount of biographical information authored by Louise Stanton Johnson, who worked as Townsend’s secretary during his time as Senator. The collection has been arranged into four series: Governor and Senatorial papers; Townsend Inc. Farms records; Louise Stanton Johnson papers and Printing plates and seals. The materials in the collection date from 1908 to 1977, with a bulk of the materials from the 1930s through the 1950s.

Alfred Irénée du Pont (1864-1935) was the eldest son of E. I. du Pont (1829-1877). He joined the family gunpowder firm in 1884, eventually becoming co-owner. He was an accomplished musician who composed many scores, however, he destroyed most as he became deaf. Only six survive. This compact disc contains six sound recordings of scores composed by Alfred I. du Pont. Performed by the New Tankopanicum Orchestra, conducted by Brian Cox, Published in Greenville, DE : Tank CD p1993. Includes program notes (1 folded sheet [6] p. : ill.) inserted in container.

William P. Brobson (1786-1850) was an attorney, editor, and politician in Wilmington, Delaware. This is a copy of his diary on two reels of mirofilm. Brobson's diary contains details of his person life, but also reflects his political interests and includes his comments on current events, particularly during the John Quincy Adams (1767-1848) administration and the rise of Andrew Jackson (1767-1845).