Collectors-Mall: CFB Wyoming Doanes Summary, list of Wyoming Doanes.
Maximaphily U.S.A.: Articles and maximum cards images prepared by MACSU - MAximum Cards Study Unit of America.
Michael's Stamp Pages: Features photos and information on stamp collecting specializing in pre-cancels.
Postal Cancellations Art: Pictorial cancellations with matching stamps creates a thematically-unified whole.
Stamp Printers: Provides lists of printers for selected countries, company histories, images, and articles related to production.