Palmolive Outdoor Billboard Advertising circa 1924 by Poster Advertising Co By Melanie | October 16, 2013 Palmolive Outdoor Billboard Advertising circa 1924 by Poster Advertising Co Posted in Marketing and tagged 1924, Palmolive, Poster Advertising Co ← Printing Press Illustrations circa 1645 by Abraham BosseOld Map of Barbados circa 1750 →