Are you a U.S. Lighthouse Society Lighthouse passport holder? ROALPS has a stamp for you! Available in person at Windigo Ranger Station Isle Royale National Park or by mail, the stamp captures the essence of the Rock of Ages Lighthouse.
If you want your stamp by mail, make sure to include the date you visited, or even better, a picture. Send either, along with a self-addressed stamped envelope and a small donation, to:
Rock of Ages Lighthouse Preservation Society
710 2nd St
Carlton, MN 55718
The stamp is not available at the lighthouse since it is still closed to the public.