Standard flag cancel encyclopedia
Subtitle: a classifying research work
By: compiled from original sources, including official records no longer existing by Frederick Langford.
Edition: 3d, completely rev., ed.
Publisher: Langford
Published: 1976
Place of publication: Pasadena, Calif
Language: eng
Number of pages: 117
Subjects: Cancellations (Philately) -- United States.
Other titles: Flag cancel encyclopedia.
Notes: Cover title: Flag cancel encyclopedia.