Georectified mosaic of historical aerial photographs of the Colorado River in Mohave Valley, Arizona, California, and Nevada, acquired in 1938

This product is a georectified and tonally balanced mosaic of aerial photographs collected in 1938 by the U.S. Bureau of Reclamation along the floodplain of the...本产品为1938年由美国垦务局（U.S. Bureau of Reclamation）沿……洪泛平原采集的航空摄影照片经地理校正（georectified）且色调均衡后的镶嵌图。