Standard encyclopedia of Doremus machine cancels
Subtitle: a classifying research work
By: compiled from original sources, including official records no longer existing, by Frederick Langford.
Edition: 2nd, completely rev., ed.
Publisher: F. Langford
Published: 1988
Place of publication: Pasadena, Calif. (P.O. Box 802, Pasadena 91102)
Language: eng
Number of pages: 60
Subjects: Postmarks -- United States -- Catalogs.
Other titles: Doremus machine cancels.
Notes: Cover title: Doremus machine cancels.