Original 1st printing 8&1/2 x 11" concert/event flyer for Big Brother & the Holding Company (featuring Janis Joplin) appearing at Sokol Hall in San Francisco, CA on 12/25/1967 (*this was the band's 2nd Annual Christmas Party)

 

 Artist unknown, medium-thick index stock flyer is in ULTRA-CRISP mint/near mint to near mint (A/A- to A-) condition; there are a couple of soft pinch dings scattered around the image area, but overall it is a VERY nice example of this original 1967 band-generated party invitation from a tiny San Francisco venue.