Original 1st printing 23 x 17&1/2" concert poster for Iron Butterfly appearing with Country Joe & the Fish at Merriweather Post Pavilion in Columbia, MD on 8/24/1968.

 Design by McNeill, the image is featured in the Art of Rock book on page 304 (plate 3.159). 

 Medium thin flat index stock poster is in decent/used (B/B- to B-) condition; there are numerous dark tape shadows, light creases and a couple of small tears scattered around the outer margin area, along with a moderate amount of handling wear/creasing throughout, several semi-pronounced vertical roll bends and a bit of corner-tip wear... this piece has definitely seen better days, but it's still in presentable shape. 

 Neat little low-run regional oddball piece from the AOR, this one came right from a direct relative of one of the bands.