Recently at South Lake Union a mammoth or mastodon tusk was found in the ground and removed and taken to the Burke Museum.
Wallingford has something of the same, for if you go to Keystone, between 53rd and 54th, N, there is a new house being built. On the parking strip is a pile of granite boulders removed from the soil. If you look at a brownish boulder in that pile, close to the sidewalk, you will see that it is petrified mud and that it contains many clam shells. I asked the owner if I could have the rock and he said “Yes” but once I got the rock on a dolly it turned out the dolly tires were flat so I abandoned the project and the rock. I did leave a message at the Burke.