On October 11th over three hundred visitors representing more than 50 campus units and 25 outside companies, agencies, and nonprofits made their way through the halls of Science Hall on the UW-Madison campus.
The U.S. Geological Survey (USGS) Central Regional Library in Denver, Colorado maintains a collection of over 400,000 photographs taken during geologic studies of the United States and its territories from 1868 to the present.