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Research and documentation are a collector's friend. In carrying out such work, it's valuable to coordinate with other collector's of the same area and compare notes (or at least have a rootbeer!) |
Agriculture Cover Census
International Institute of Agriculture Census
(Active Updates - April 2020)
Leticia Conflict Cover Census
Leticia Cover Census
(Active Updates - July 2020)
Paleontology Checklist
Prehistoric Animals on Stamps - 1949-1989
(March 2007)
Sinclair Postage Meter Study
Sinclair Dinosaur Postage Meters - 1934-1968
(Active Updates - September 2018)
Files are in pdf format
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