Historical Black and White Aerial Photography for Seminole County, Florida Starting in 1940 with the Agricultural Stabilization and Conservation Service (ASCS), then a Department of the US Department of Agriculture, a series of aerial photographs was acquired for Seminole County. These ASCS aerials, originally provided and stored as black and white 9" x 9" contact prints, as well as other paper aerial photos collected over the years by Seminole County's Engineering Office have been scanned and provided digitally in the jpg format. The images are not currently geo-referenced and hence cannot have other GIS data layers overlaid without additional processing. The scanned imagery includes 1940, 1948, 1957, 1968, 1972, 1974, 1980, 1986, and 1989 photography.  The Index Map to the aerial photographs by year may be in several formats depending on available source material: 1. The original scanned paper map, but geo-referenced and rectified.  An ESRI GIS data format shape file derived from the above as a polygon feature. 2. The original CAD file of the Index Map.  An ESRI GIS data format shape file derived from the above as a polygon feature.  The Index Map for the years 1972 to 2002 is common. These scanned historical aerials have been made available courtesy of the County Engineer's Office located in Reflections Plaza at 520 W. Lake Mary Blvd, Suite 200, Sanford, Florida 32773 and the Geographic Information Services Office of the Information Technologies Department located at 1101 E 1st Street, Sanford, FL 32771.  For a discussion of the availability of historical hardcopy photography, follow this link. For each of the following samples the I-4 / Lake Mary Blvd interchange is in the lower right corner.

1940	1948	1957	1968
1972	1974	1980	1986
1989

 For each of the following samples the I-4 / Lake Mary Blvd interchange is in the lower right corner.

1984 CIR	1995	1999 Color	1999 B&W
2000 CIR	2002	2004

Some Useful Links
For free software for viewing or using imagery, we recommend:
ESRI ArcExplorer GIS software
MrSid Image Viewer

Other sources for aerial photography and satellite imagery we've found useful:
St John's River Water Management District
Aerial Cartographics of America
The US Geological Survey Image Library
National Aerial Photography Program (NAPP)
SpotImage
Space Imaging provides access to remote sensing satellites and sells data and information products derived from Earth imagery.
Quite possibly the largest online atlas of high-resolution worldwide satellite imagery and aerial photography. TerraServer.com is the online source for overhead imagery.
The Earth Resources Observation Systems (EROS) Data Center (EDC) is a data management, systems development, and research field center for the U.S. Geological Survey's (USGS)National Mapping Division.