Standard encyclopedia of Doremus machine cancels
Subtitle: a classifying research work.
By: Compiled from many sources, including official records no longer existing.
Published: 1968
Place of publication: [Pasadena? Calif
Language: eng
Number of pages: 32
Subjects: Postmarks -- United States -- Catalogs.
Other titles: Doremus machine cancels.
Notes: On cover: Doremus machine cancels.