Born on August 18th, 1904, in Switzerland

Died on July 26, 1993 

Louise was a Swiss-born American writer of children's books. Many were created in collaboration with her husband Roger Duvoisin, a Swiss-born illustrator, and she is known best for their picture book series Happy Lion. The Happy Lion (1954), first in the series, won the inaugural, 1956 Deutscher Jugendliteraturpreis in its German-language translation.