1981-83 NHAP81
The 1981-83 NHAP83 (National High Altitude Photography Program; Cache [49005], Davis [49011], Duchesne [49013], Morgan [49029], Summit [49043], Wasatch [49051], and Weber [49057] Counties, Utah) black and white infrared and color infrared aerial project was acquired by the U.S. Geological Survey (USGS) at a scale of 1:58,000.