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.

Between 1802 and 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the du Pont family business, which was founded by Éleuthère Irénée "E.I." du Pont (1771–1834). Longwood Gardens is a series of formal display gardens in Kennett Square, Pennsylvania, that was developed by Pierre S. du Pont (1870-1954), a descendent of E.I. du Pont. These are aerial views of the residence at Eleutherian Mills and Longwood Gardens taken by Dallin Aerial Surveys Company.