American Environmental Photographs, 1891-1936

American Environmental Photographs: around 4,500 photographs from the period 1891 to 1936 (the bulk from 1897 to 1922), depicting natural environments and ecological plant communities in their original state throughout the United States. This rich resource of American environmental photography documents changes in the natural landscape, provides historical reference points for the development of these areas, and highlights the work of a group of influential American botanists who defined the scientific and intellectual theories of ecology that shaped the modern conservation movement.