I really need to check the blog comments before I post. Alanson's 4th great-grandson has posted some great information in the comments, including the web links for a version of the bear story, and a photo of Alanson. There is also some additional informaiton about Alanson's wife.
The format of the comments apparently cuts off longer web addresses, so I am placing the links here so hopefully all you need to do is click.
The bear story:
The biographical info on Alanson in Storke (1879):