1940 Aerial photograph, Perry Mesa region, north-central Arizona

1940 aerial photograph; Bull Tank / Fortified Garden / Speedway Ruin; taken by National Air Survey Center Corporation (Bladensburg, MD); image rights held by Legacies on the Landscape Project (Arizona State University)

该数据集为1940年航空摄影资料，涵盖公牛坦克掩体（Bull Tank）、设防花园（Fortified Garden）及赛车场废墟（Speedway Ruin）三类拍摄对象，由国家航空测量中心公司（National Air Survey Center Corporation，位于马里兰州布拉登斯堡）拍摄，图像版权由亚利桑那州立大学景观遗产项目（Legacies on the Landscape Project）持有。