Examining historic vegetation and vegetation change since Euro-American settlement is important for ecosystem management and restoration (see Swetnam et al. 1999). At the end of the 19th century and early 20th century, several Federal agencies documented environmental conditions throughout the Western US during. Maps and documents from this period have provided important information about the condition of the environment to scientists and land managers interested in restoring ecosystems to those existing prior to Euro-American settlement. In the 1930s, state and federal agencies began taking aerial photographs of the landscape. These are usually high resolution (~ 1 meter pixels), which allows scientists and land managers to “remotely see” the landscape. If photographs have been taken at multiple times in the past, it is possible to determine how vegetation and land use has changed. Below are four different datasets from the San Francisco Peaks area in northern Arizona that can be downloaded and viewed in a GIS (e.g., ArcGIS).