U.S. machine postmarks, 1871-1925
By: by R.F. Hanmer.
Edition: 2nd ed.
Publisher: R.F. Hanmer
Published: 1984
Place of publication: Wallingford, CT (PO Box 614, Wallingford 06492)
Language: eng
Number of pages: 121
Subjects: Cancellations (Philately) -- United States -- History.; Postmarks -- United States -- History.
Other titles: US machine postmarks, 1871-1925.
Notes: Bibliography: p. vi-vii.