That note is the original cover from the first register placed on the summit. Those were likely the first people to climb this mountain and they placed a notebook inside a coffee can on top for others to sign when they reached the summit. The peak was later added to the official Sierra Club San Diego Peaks List.

After this one, I have climbed 91/100 on the list.

I don't know about dinosaur bones, but we did find some indian pottery shards. There are supposed to be a lot of indian artifacts in the area, but I think it is illegal to remove them.