Friday’s ad is entitled Picnic on a California Beach, and the illustration was done in 1947 by John Gannam (and here’s some of his other work). It’s #6 in a series entitled “Home Life in America,” also known as the Beer Belongs series of ads that the United States Brewers Foundation ran from 1945 to 1956. In this ad, a group of people — I count 14 — are having an nighttime party on a California beach. It looks like a cool, windy evening and many of them are wearing overcoats, although they also seem to be wearing bathing suits, which suggests they’ve been there all day. It looks like reinforcements are arriving, with a cooler being carried in to keep the party going.
“Overcoats”? They look like bathrobes to me.