Bob Allen's beautiful and well organized catalog of US stamps from 1847 to 1970 is a fantastic resource for all US stamp collectors. Browse by year or identifier, or search by keyword or Scott number and you'll find beautiful scans of each stamp along with basic identification information. There's also an article library and glossary (secret marks, water marks, paper types, plate layouts, etc.), and an interesting special section on Washington Franklin worksheets. Don't miss this great site!
Bob Allen talks about U.S. stamp collecting, providing information on topics such as the history of United States stamps, their design and production processes, regular issues and commemoratives, and special features such as perforations, w… Read more »