Stamps related to TRIX
In addition to
Stamp collecting is a lifetime hobby of George. He is not the only one enjoying this hobby:
- Images of Mathematicians on Postage Stamps (Jeff Miller)
- Mathematical Stamp Collecting (Jim Kuzmanovich)
- Mathematics on Stamps (Hung Manh Bui)
Kloetzel, J. E., ed. (2010). Scott Standard Postage Stamp Catalogue. Scott Publishing.
[Currently published annually in 6 volumes (on paper)].