Twen
Twen was a youth magazine in West Germany published 1959-1971. It was the groundbreaking design ideas, innovative usage of photography and full use of the advanced printing methods that made
Twen a leader in magazine layout and design. (Magazine
Designing)
This article with great pictures was originally published in Life, June 28, 1968. The picture of the Mothers of Invention is on page 76.
Source: eBay
1971 April
Vol. 13 No. 4
Musik, die ich mag: Frank Zappa - und das
Spiegelbild auf dem Klo
Wolf Wondratschek, pp 122-123