Hey knowledgeable ones,

I'd love to get a collection of all the Mudhoney soundboard shows that are circulating.

Can anyone here give some help? I have no idea what's out there...

There are a lot, including a few that are officially released. I'm not sure I can help you too much as Mudhoney bootlegs can be difficult to come by, but here's a rough list:

04/25/89 Juze, Backnang, Germany
08/29/89 Berkeley Square, Berkeley, CA
03/06/92 Hollywood Palace, Hollywood, CA
04/19/92 Phillipshalle, Dusseldorf, Germany
02/10/93 Oddfellow's Hall, Seattle, WA
10/28/98 Euclid Tavern, Cleveland, OH
10/30/98 Metro, Chicago, IL
02/12/99 RCKNDY, Seattle, WA
02/18/01 Ballroom, Rio de Janeiro, Brazil

There's a lot more from 2001-2008 that I don't feel like listing. Soundboards exist for virtually every show they've played in Portland, Oregon since 2001.
Hopefully this helps.

Thanks a bunch, Matt. I'll keep my eyes peeled...

Some of those have been torrented on DIME recently; I suggest going there. A bunch of Mudhoney boots have popped up there recently.