Comic strip by Bill O'Malley.
William Patrick "Bill” O'Malley" was an American magazine cartoonist who was active from the 1940s until his death in the 1970s. He worked as a newspaper cartoonist before turning freelance. He is best known for his cartoons starring the two nuns Sister Maureen and Sister Colleen for Extension Magazine. His cartoons have been collected in book format since the 1950s, and also appeared in foreign magazines like the French-Canadian Catholic magazine L'Éclair.
Cartoon by Bill O'Malley.