Ben L. Kaufman writes about the improbable show that many Valley kids remember from the football field at Birmingham High School on May 20, 1967:

For a $3 ticket (which I still have) there was a concert featuring Jefferson Airplane, the Doors, Merry-Go-Round, Peanut Butter Conspiracy, Sunshine Co, and the Nitty Gritty Dirt Band. My understanding at the time was that a student's father was a promoter and the concert was to raise funds for the bleachers. It was a great concert with the groups all singing their current hits.

I found the poster online. A few days before playing Birmingham High, the Jefferson Airplane performed at Fillmore Auditorium in San Francisco.