|Scope: Series consists of aerial photographs and orthophotographs created by the Vermont Mapping Program. The aerial photographs include indices from flight series VBM, VT7420, and VMP. While none of the series is complete, together they offer a comprehensive view of the state between 1968 and 1979. Photographs from series VBM cover the southern half of the state, starting near Rutland, and were shot at a focal length of 6 inches with a scale of 1:24,000. Photographs from VT7420 cover the whole state and were shot at a calibrated focal length of 152.42-152.92 mm with a scale of 1:21,600. Photographs from VMP document central Vermont. Partial indices are available for all three series.
The orthophotographs consist of aerial photographs that have been geometrically corrected so that the resulting images have the accuracy of a map while retaining the detail of a photograph. The first set of orthophotographs for the entire state was completed between 1974 and 1985. The program then began the process of creating an updated set of imagery. As a result, each map area has at least two Mylar orthophotographs associated with it dating from between 1974 and 2001. The majority of the orthophotographs are at a scale of 1:5000. Orthophotographs at a scale of 1:1250 also are available for more densely settled areas. Some imagery after 1994 also is available digitally.