U.S. postal markings 1851-61 and related mail services
Subtitle: with standards of condition and estimates of rarity; a catalog for stamp collectors for use with a supplemental pricing pamphlet (bound herewith including addenda) that includes the compiler's estimate of current appraisal values of the markings when on covers with adhesive stamps or on Nesbitt envelopes
By: by Tracy W. Simpson.
Publisher: S. Colby
Published: 1972
Place of publication: New York
Language: eng
Number of pages: 177
Subjects: Postmarks -- United States.
Notes: Bibliography: p. 1-3 (1st group)
"Under sponsorship of the U.S. 1851-60 Unit No. 11 of American Philatelic Society. A.P.S. Unit No. 11 now known as the U.S. Philatelic Classics Society, inc."