Six gilded cherubs scramble across the glittering dome of Boston's State House — scrubbing, polishing, and hoisting bars of Sapolio soap on ribbons — in one of the most inventive advertising trade cards of the Gilded Age, issued as a souvenir of Boston's 250th Anniversary of Settlement in 1880. Enoch Morgan's Sons, the New York makers of Sapolio household cleanser, commissioned this tour-de-force chromolithograph with a metallic gold-ink dome that shimmers in the light, the putti rendered with the same painterly delicacy one might expect in a church fresco. The verso, distributed locally through J. H. Pettinger & Co. at 4 & 5 India Street, Boston, lists Sapolio's remarkable range of uses — cleaning marble, tin, knives, oil-cloth floors, and bath tubs — at a price "never over 10¢ per cake." Boston's 250th anniversary was celebrated in 1880 with citywide festivities, and Enoch Morgan's Sons seized the moment brilliantly; a housewife named Mary or a schoolboy named Charles might have carried this card home from the grocer's and never forgotten it.