so i'm really going to have to say you shouldn't do that.
if you're adding ad-hoc things to the BASH newsletter; its the BASH newsletter, not the Ad-hoc newsletter. if you do, then i should expect to see 'stuff' for all the organizations we have cross-membership of.
If you want something put in there about Ad-hoc, announce it during the meetings and it'll end up in the minutes in an appropriate place.