The catalogue was published between 1964 and 1989[1] and comprises nineteen alphabetical volumes with supplements.
The earlier volumes were edited by Edward Fladung who worked with Alexander D. Gage in the production of the catalogue.
Originally published by Higgins & Gage Inc., the catalogue has now been acquired by Classic Philatelics of Huntington Beach, Pasadena, California.
Classic Philatelics also produce a new issue postal stationery report.
The postal stationery items which are included in the catalog are stamped envelopes, postal cards, lettercards, wrappers, aerograms and registration envelopes (Titles from most recent editions)