I don't mention Bud Bolt's Museum often enough.
If you haven't look into it, do so.

http://www.boltsantiquetools.com/

One of his stories tells of he and his father finding an old monkey wrench in the dirt, and discussing it.   

I visited and met Bud last month.

A great museum, easy to spot a few errors in descriptions but I'm still learning.

Bud has a bin full of "make an offer" tools I rummaged through and scored a few gems.

I left Bud a couple of odd wrenches I couldn't see on his display boards and a length of aluminium barbed wire.

Recommended.