Society Information Collecting and Exhibiting Postal Stationery Other

Some additions to the 20th and 21st Century US Stamped Envelope Catalog: What should be listed in a catalog? 1904 recut pricing (revised 18 May 2011) 2004 catalog entries that could not be verified Promotional sample envelopes of the 20th century U617 varieties New items added to the 20th and 21st Century Catalog Double impressions Corrections (revised 23 Nov 2011) Corner cards on revalued envelopes (revised 23 Nov 2011)