This index to the Records of the Department of State: Communications from Special Agents, 1794-1906, collection provides the dates each reel covers. Government Information MAY NOT hold all of these reels. The record in the library catalog describes the extent of our holdings. For help, or to make an appointment to view a reel, email rad@colorado.edu
The spreadsheet attached below contains a reel-by-reel description of the complete collection.