Charles D. Walcott indexes locality numbers according to states, localities, and formations in what appears to be an address book. He also includes Burgess Shale fossils. Locations are listed alphabetically and include most of the United States,parts of Canada, as well as a few sites in Sweden, Norway, and India. Many localities listed for states: Alabama, Wisconsin, Utah, Tennessee, Nevada, Montana, New York, Minnesota, and Georgia. Most of the book is blank and undated.