The Dallin Aerial Surveys Company produced aerial photographs for newspapers, businesses, municipalities, and private individuals. The company was founded in 1924 by Colonel J. (John) Victor Dallin (1897-1991), a Royal Flying Corps-trained pilot who served in World War One. During WWI he became involved in aerial photography on a reconnaissance mission during the latter stages of the war. This collection consists of over 13,000 aerial photographs primarily of the Mid-Atlantic region taken between 1925 and 1941. The company made vertical and oblique aerial photographs of factories, private estates, schools, country clubs, towns, airports, rivers, and many other sites and some news events of the day. The subject with the largest number of views is the city of Philadelphia.

Coatesville is a city along the Brandywine River in Chester County, Pennsylvania. This item is a booklet containing 16 postcards with images of sites in and around Coatesville, Pennsylvania.

This collection consists of glass plate negatives showing scenes from Carbon County, Pennsylvania during the second half of the nineteenth century, as well as a selection of archival prints. The majority of the images show scenes from Mauch Chunk (now Jim Thorpe) and the surrounding area, the Mauch Chunk Switchback Railway, and the waterfalls at Glen Onoko.

McCullough Iron Company produced the first galvanized sheet iron in the United States, and then went on to produce charcoal blooms and iron bars. The Octoraro Rolling Mill was built in 1828, originally owned by Joseph Roman and purchased by McCullough & Co. in 1857. It operated until 1893. This item is a panoramic-type nineteenth century albumen photograph showing the town of Rowlandsville, Maryland, on Octoraro Creek in Cecil County. The iron-works may be in the distance, and the houses may be predominantly worker's housing.

The Morris family of Philadelphia were brewers, merchants, land speculators, manufacturers, and prominent participants in public affairs. This collection contains fourteen albums of photographs and postcards of foreign scenes between 1881 and 1906.

The Whitaker family of Philadelphia founded and operated William Whitaker & Sons, Inc., one of the oldest Philadelphia textile mills. The collection consists of photographs related to the family of William Whitaker. A number of the photographs feature buildings and bridges in and around Cedar Grove, Pennsylvania, now a part of Philadelphia. William Whitaker's mansion is featured in several of these images, with family gathered on the porch.

Based in Wilmington, Delaware, the Wilmington Public Library has been serving the public since it was established in 1754. This collection consists of eighty eight films, dating from 1914 to 1984, donated by the Wilmington Public Library. These films were de-accessioned from the library’s non-circulating collection. This collection is organized into nine series based on the film’s subject or type of production: American History, Archaeological, Business, Commercial films/television, Educational, Environmental, Experimental, Political Science and Urban/Rural Studies.