The Doctrine of Signatures (DoS) In 2001, my Mother retired and took the family on a cruise through Alaska’s Inside Passage. We flew to Vancouver from Seattle and boarded a cruise ship that deposited us in Ketchikan, Juneau, Sitka, Skagway, and Glacier Bay National Park and Preserve. We bussed to Anchorage, and then independently ventured … Continue reading The Doctrine of Signature (DoS)