This poster was printed just once, prior to the shows, and measures approx.  12 3/4" x 22".  However, due to changes made to the printing plate during the run (gotta make sure the copyright holder's name is properly spelled), there are two distinct variations.

This poster, Type A, has the phrase "@ B.  GRAHM 67" on the poster above the word "Lights".  Bill Graham's name has been misspelled.

This poster, Type B, has the same phrase as the Type A, but an "A" has been scratched into the plate between the "H" & "M" in "GRAHM".  In addition, the number "97" has been very faintly scratched into the plate just outside of the heavy black line around the green globes.

The original post card was printed prior to the shows and measures approx.  4 3/8" x 7".  This card has a "place stamp here" reverse.

A double card of the BG 97 & 98 images was also printed.  The back of the BG 97 image on this card has a "bulk rate" stamp, so if a BG 97 card has a "bulk rate" back, it has been cut from a double card.