First thing I found was a reference to the Itallian Griffon, a breed of dog.
The I found this. <Google books> Maybe it will help as a starter.
OTOH, Mayer and/or Daniele probably know more than everything you or I could find on the Interwebical.
Oh no! I know the rules on this! It's only tax deductible if (a) it's never worn for any other purpose and (b) it is not suitable for other purposes. (At least that's what I remember from my one tax class, as an undergraduate, way long time ago.)
OTOH, if you have an auto and put advertising...
You should see the bonespurs in my shoulders from decades of schlepping bags with shoulder straps through airports, into and out of cabs, down the street, on the bus, escalators, trains, elevators. But, would I trade for one of those silly, drag behind you, rolling bags Nope!
That's not the way I remember it. I remember something like ...hmmmm...looking it up...it was the Jew for one thing, the Eye-talian for something else ... can't find it, but as I think about it the discussion was something like this:
Archie: Edith! Call the lawyers!
Edith: What lawyers...
Romans? Seems the Greeks knew something about pounding wool. I hear-tell the Scots know a bit about that, too. :)
More seriously, the first time I saw felting was a in documentary re a Somewhere-i-Stan tribe that made felt by beating a pile of wool with long bats, several people in a circle...
Hmmm...mebbe people ordering hats from certain hatters should include in their contracts that any fondlers will be charged for the pleasure, with the monies collected split between the hatter and the buyer.