Original 1st printing 10&7/8 x 14" boxing-style concert poster for Frank Zappa & the Mothers of Invention (featuring Flo & Eddie) appearing at the Fountain Street Church in Grand Rapids, MI on 11/19/1970.

 Designer unknown/not credited, thick cardboard stock letterpress poster is in good/decent (B to B/B-) condition; there  are a couple of moisture stains/discolorations along the upper left margin, along with a slight discoloration around "Fountain Street", a couple of thin diagonal corner-tip bends, a few thin stress creases and pin-prick indentations scattered around the image area and a moderate amount of staining/mold spotting on the reverse side, otherwise OK... conditional issues aside, it still looks pretty decent overall and there really can't be too many of these out there.

 ULTRA-COOL (and VERY scarce) late-1970 Frank Zappa and the Mothers concert artifact from the (still operational) 150+ year-old Grand Rapids institution.