Throughout the 1940s-1960s, the "Two Little Nuns" were a wildly popular feature among Extension magazine's thousands of subscribers.

Sister Colleen and Sister Maureen, created by artist Bill O'Malley and later illustrated by Joe Lane, were so popular that several compilation books of their comic adventures were printed and sold through Catholic Extension in the 1950s.

Browse the gallery to view a sampling of some of the cartoons. Follow us on social media to see more.