Pair of second printing 17x22" stiff paper posters. Both feature the same exceptional art of bizarre airship w/bulbous body and detailing including a pointing finger coming out of one wing, nude woman coming out of the propeller, a goldfish under the canopy, faces coming out of back opening, on top is umbrella w/shower head, etc. Around this in psychedelic letters is large "Jefferson Airplane" name. Below this is text "Ectodelic Trip - Civic Auditorium." While both posters feature same illustration and general design, the first poster has a darker purple color and features a blank bottom margin while second poster features a plum-like coloring and has "©Dave Schiller 1967 San Jose, California" and "Sparta Poster #1 Suggested Retail Price $1.00" and has additional Sparta marking just below art image. Both have lt. handling wear and some scattered dust soiling. Both are VF.