Saturday’s ad is for Carling’s Red Cap Ale, from 1949. In this ad, part of another series featuring well-known celebrities of the day and the tagline “x person, too, has graduated to Carling’s — the LIGHT-HEARTED ale!,” it features band leader Shep Fields wearing an Oxford cap, or mortarboard, with a small red cap on top of it while holding up a glass of Red Cap Ale. He “was the band leader for the “Shep Fields and His Rippling Rhythm” orchestra during the Big Band era of the 1930s.”