Description
Three color 10″ x 14″ ad with a headline that claims that “Now all ENGINES become better engines”. Also shown in the ad is a large drawing of a spark plug with an arrow pointing toward the igniter and saying “The exclusive Champion Sillimanite insulator”. This ad is larger than my scanner bed so the outer edges of the ad will not be visible in the scanned view.
Source: February 21, 1931 Collier’s.
