The Biology Unit, founded in 1951, is a study unit of the
American Topical Association dedicated to the international
cooperative study of biological postage stamps and related material.
It publishes an award-winning quarterly journal, Biophilately.
Annual dues are $20 (US & Canada), or $25 (International).
On-line only memberships are available for $15.
Send membership inquiries to the Secretary, Chris Dahle, (firstname.lastname@example.org), or visit the website at www.biophilately.org