Loudoun Imagery 1957 (BW)

More Metadata This data set contains the 1957 and 1958 aerial imagery for the majority of Loudoun County, VA. It is composed of United States Farm Service Agency (USDA FSA) hardcopy imagery, which were scanned, georeferenced, and mosaiced by Loudoun County OMAGI to produce digital representations. Individual images cover approximately 15000' by 15000'. 1957/1958 Photography flown by United States Farm Service Agency更多元数据：本数据集包含弗吉尼亚州劳登县（Loudoun County, VA）绝大多数区域1957年与1958年的航空影像。其原始素材为美国农业服务局（United States Farm Service Agency, USDA FSA）的纸质航空影像，经劳登县OMAGI完成扫描、地理配准与影像镶嵌处理后生成数字影像产品。单幅影像的覆盖范围约为15000英尺×15000英尺。本次1957/1958年航空摄影任务由美国农业服务局执行。