My first Stones show was 7-6-75 before 75,000 people at the Cotton Bowl Stadium on the State Fair grounds of Dallas, Texas and on the bill were The Ronnie Montrose Band, Trapeze, The Eagles (original line up) then The Rolling Stones. 97 degrees that day.
The Eagles either played the night before or night after the Stones in Greensboro, 31 July 1975 but the point is that Glenn Frey and his younger brother attended that show.