The U. S. Geological Survey (USGS) Photographic Library in Denver, CO has a helpful collection of digitized photographs available for researchers. These images, beginning in 1868, provide a visual history of the discovery, development and science of the United States and its Geological Survey. There are over 400,000 pictures in the collection and some have been used in USGS publications. But most were never published.
Currently about 10-percent of the collection is digitized. Keyword searches show that there are dozens of images from Maryland, a number from the Eastern Shore of Virginia, and some from Delaware presently available on the web. In addition, there are many visual attractive and fascinating pictures from all across the nation, such as Main Street in Cheyenne, Wyoming in 1869.
