14x26.75" (should be 14x28", bottom has had 1" trimmed off) thin cardboard window card for Dec. 2, 1966 concert that took place at Mayser Gymnasium in Lancaster, PA. Concert was presented by the Student Union Board of Franklin & Marshall College and featured folk trio Peter, Paul and Mary, who are pictured in bluetone photo at top left. Card has had extensive restoration along bottom w/entirety of "Mary" name having been repainted due to moisture staining along bottom. As restored, this blends somewhat and does not greatly detract from overall appearance. Heavy crease at bottom left and corners have had thin cardboard reinforcement added and extent of moisture staining can be seen on this side. "Peter" and "Paul" names have a few small spots of color touch-up, but these blend. Photo has not had any restoration and rest of poster still displays nicely overall. Rare. Similar design to Diana Ross and The Supremes window card #2552.