Text reads:
"Celebrate the Century
John Muir, Preservationist
1908"
First Day Cover by Mystic Stamp Company
9700 Mill Street
Camden ð NY ð 13316
(ph) 1-800-433-7811
(fax) 1-800-385-4919
Email: mystic@dreamscape.com
Muir was previously honored with a 5 cent postage stamp in 1964.