Margaret Wise Brown was born on May 10, 1910 in Greenpoint, Brooklyn, New York, to Robert Brown, a Vice President at American Manufacturing Company and Maud Brown, a housewife. She attended school in Lausanne, Switzerland for three years, before attending Dana Hall in Wellesley, Massachusetts for two years. In 1928, she began taking classes at Hollis College in Virginia. In 1935, Brown began working at the Bank Street Cooperative School for student teachers. Two years later, her writing career took off with the publication of "When the Wind Blows." Over the course of fourteen years, Brown wrote over one hundred picture books for children. Some of her best known titles include Goodnight Moon, Big Red Barn and Runaway Bunny. Margaret Wise Brown died on November 13, 1952 of an embolism following an operation in Nice, France.
Leonard Weisgard was born in New Haven, Connecticut on December 13, 1916. He attended Pratt Institute for two years and studied dance with Martha Graham before becoming a window dresser at Macy's. He began his career making illustrations for several magazines including Good Housekeeping, The New Yorker, and Harper's Bazaar. He eventually focused on illustrating children's books. His first book, Suki, the Siamese Pussy, was published in 1937. He and Margaret Wise Brown first collaborated on the Noisy Books series, which urged readers to imitate sounds like dogs, trucks, and jackhammers. In 1947, he won the Caldecott Medal for The Little Island written by Brown under the pseudonym Golden MacDonald. He also wrote books he illustrated himself. In the 1950's, he designed the stage sets and costumes for several productions of the San Francisco Ballet. He died on January 14, 2000 at the age of 83.