Seaman was the Newfoundland dog that went with Lewis & Clark on their exploration of the territory purchased from France doubling the then size of the United States. Their are many statues of Seaman along the route they went.
Retired educator - taught mathematics in high school, went back to graduate school, worked in research labs, and finally went back and taught computer science...
What a colorful and interesting find. I went on a tour a few years ago in which our guide told many Lewis and Clark stories. He seemed to omit the part about the dog. I've never heard of Seaman before.