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. A small amount of the Philadelphia-area images are of street level views, estates, and gardens.

States heavily photographed include Pennsylvania, Delaware, New Jersey, New York, and Maryland. Other states listed in descending order of number of photographs in the collection are: Florida, Virginia, Georgia, Massachusetts, Alabama, North Carolina, South Carolina, California, Ohio, Wisconsin, West Virginia, Rhode Island, Arizona, Illinois, Washington D.C., Connecticut, New Mexico, Indiana, and Oklahoma.

There are photographs of the company's work in Cuba in 1929. There is also an audio recording of an oral history interview with Dallin recorded in 1967, he explains many of the necessary technological adaptations required during these pioneering years of his practice of aerial photography.

There are a series of photographs from various mapping projects of the Philadelphia-area that took place between 1934 and 1938. These mapping projects were assigned a three or four digital number generally beginning with the letters "SP" or "G." The largest project centered around the Philadelphia Airport.

All of the negatives were given numbers by the Dallin Aerial Survey Company. These numbers have been retained and the collection is organized by these numbers which roughly corresponds to being in chronological order though not entirely.