Photographs Showing Change in Riparian Vegetation in the Grand Canyon, 1889-2012

The dataset includes 492 digitized prints of large-format photographs from 160 viewpoints. A separate metadata file "Photographs Showing Change in Riparian Vegetation...本数据集包含源自160个拍摄视角的492张大幅面照片的数字化副本。另有一份独立元数据文件，其文件名为"展示河岸植被变化的照片……"。