HERRERO, Lowell (1921-2015). Group of 4 Del Monte Safari Sale posters. USA, 1967. Offset lithograph advertising posters showing a safari explorer’s interactions with wild animals. Each approx. 35 x 24 ½” (two posters remain on a single folded, uncut sheet, as issued). Unmounted. A few short edge tears. Generally A-/B+. Herrero’s posters highlight major American brands’ willingness in the late 1960s to embrace pop art aesthetics in their own ad campaigns, and are similar to the bold works of contemporaries such as Peter Max, Heinz Edelmann, and Seymour Chwast.