"No Nixon Agnew War." Poster, silk screen. Artist: Karl Kasten. From the Thomas W. Benson Political Protest Collection, Penn State University libraries.
The artist has been identified as Karl Kasten, a professor of art practice at Berkeley in 1970. Source: note to the author from Phil Allen, received November 3, 2015 (see next note on blog). The poster is Plate 20 in Thomas W. Benson, Posters for Peace: Visual Rhetoric and Civic Action (University Park: Pennsylvania State University Press, 2015).