Dude, since we're talking 80's, I just made a sick find. (As in the good "sick" not the bad.) I found old concert t-shirts while I was cleaning out our storage shed: Rolling Stones with a giant version of their logo and the dates "1981-1982"; my mom's from some Summerfest tour featuring BOC, Foreigner, .38 Special, and several others with three German cities and dates on them; and a shirt from a Zeppelin tour "Over Europe 1980" (the freakin' summer before John Bonham's death) with Icarus on it, though he's a bit faded.