Vintage t-shirt from a 1980 concert series in Hartford's Bushnell Park. The concert was produced by Hartford's Peace Train Foundation.
The performers' signatures are reproduced on the t-shirt. The performers were: Stephane Grappelli, John Hartford, Maria Muldaur, and Sonny Terry and Brownie McGhee.
There are no stains, but there are some faded areas.
Note the "Peace Train" caboose on the right sleeve.
The last picture here is of a poster from the same concert series can be purchased from:
https://bluemoonharmonicas.com/collections/sonny-terry-estate-posters/products/copy-of-ohio-university-november-6th-7th-1973