American stampless cover catalog
By: edited by E. N. Sampson.
Publisher: Van Dahl Publications
Published: 1971
Place of publication: Albany, Or
Language: eng
Number of pages: 225
Subjects: Postmarks -- United States.
Other titles: United States stampless cover catalog.
Notes: "The revised edition of United States stampless cover catalog."
The first ed., printed in 1965, represented the combination of three separate catalogs: the United States stampless catalog, the American colonial postmark catalog, and the U.S. territorial postmark catalog, stampless cover collection.