Sorry to drag out this dusty old thread again. I was chatting with one of the members of the 4th Artillery Band (see above) and while they have no recordings (YET, they are working on it) they do have a web site. I should have known.(www.4thartillerybrassband.org/)
You will want to check out their fine array of links and while no tapes or CD's are offered yet, you can play their music off the web site.
Rex