|Scope: Series consists of aerial photographs and indices for flight series FEA and M-46, and a series of infrared photographs. Photographs from flight series FEA ("Fort Ethan Allen Project") cover the north half of the state and were shot at a scale of 1:20,000. Photographs from M-46 cover the New Hampshire border area and were shot with a focal length of 8.25 inches and a scale of 1:16,000. The infrared photographs document wetlands throughout the entire state and were shot with a calibrated focal length of 153.03 mm and a scale of 1:80,000. Indices are available for all three flight series.