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Stamp Collecting: Postmarks & Cancellations

The International Machine Cancel Society

Dedicated to the study of Machine Postal Markings, the machine inventors, patents, and other related history.

U.S. Machine Cancel Identifier

A set of Web pages that allow you to identify certain types of machine cancellations from the early period of the 20th century.

Stamp Collecting: Postmarks & Cancellations

Post Mark Collectors Club

The Postmark Collectors Club is a National Organization to promote the collecting of Postmarks and Postal History. The Club sponsors an Annual Convention and the Postmark Museum in Bellevue, Ohio.

GB Victorian Towns Identifier

Have you ever wondered about which town a partial CDS. came from? For the Victorian period of Great Britain... here's a chance to find out.