Feb. 21 -- The die for the Columbian stamp that will be used on the United States stamped envelopes during the World's Fair has been completed, and the printing of envelopes will begin here as ...

How many stamps do I need for a business envelope? In a commercial envelope measuring 11 inches by 11 inches, a single Forever stamp will suffice. A maximum size of 5 inches by 5 inches by 13 ...