 | - Manuscript Group 286- Penn Central Railroad Records- Pennsylvania Railroad Company
- Office of the Secretary- Tom Hollyman Photographs
- Circa 1950
- Aerial photographs of railroads
- Throughout PA
- More information on MG 286
- Numerous photographs are not from PA
- Each photograph includes a brief description
- Some town photographs
- Industrial development possibilities and industrial sites
- Railroad engines, cars, lines, yards, bridges, and ferry photographs
- Manuscript Group 281- Samuel W. Kuhnert Papers
- Dates from 1915-1978
- Mostly from Central PA
- Aerial photographs organized by town or subject
- More information on MG 281
- Some photographs are not from PA
- There are various sized photographs
- They are mostly original prints, but some have had copies made from the original negatives
- Manuscript Group 416- Aero Service Corporation Photographs
- They date from the 1920s-1930s, but some are undated
- Mostly of Philadelphia and the surrounding area
- They are on individually wrapped glass and film slides
- More information on MG 416
- Arranged by location and subject, but they are not all necessarily together
- Includes both buildings and individual structural locations such as plants and companies, schools, home and farms, cemeteries, prisons, etc.
- Some slides are not developed evenly
- Manuscript Group 425- Ebasco Environmental Aerial Photographs
- Dates from 1980-1985
- There is no finding aid for this manuscript group
- They are arranged alphabetically by county, including the counties along the southern border of PA
- More information on MG 425
- Each photograph includes a Mile Post (MP) reference with a line number
- 1 inch equals 500 feet in the photographs
- 6 series of photographs, each of which begins with a station discharge
- Each series is numbered sequentially
- Record Group 31- Records of the Department of Commerce
- RG 31.18 Aerial Photographs and Index of the 1940 Survey of Pennsylvania
- Dates from 1937-1942
- Organized by county with three letter code
- List of county codes is provided
- More information on RG 31.18
- Aerials taken from a great distance
- The date can be found on the photograph
- A few counties are not included
- There is an accompanying index for the photographs for identification
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