Alice Provensen (born August 14, 1918) and her husband, Martin Provensen, were collaborators, illustrating more than 40 books over the course of their 43-year marriage. They also co-wrote 19 of their picture books, their styles so interwoven that no one could say with any certainty who had contributed what to the projects. “Martin and I really were one artist,” Ms. Provensen once told Publishers Weekly. In 1987, Martin Provensen passed away. Although Alice was unsure she would continue to work, she has gone on to publish six other titles including The Buck Stops Here: the Presidents of the United States. With Martin, some of her best known books are The Color Kittens by Margaret Wise Brown, A Visit To William Blake's Inn (Caldecott Honor) and The Glorious Flight (winner of the Caldecott Medal). Many may not know this but the Provensens' created illustrations for The Fireside Cookbook originally published in the 1940s. This book is worth checking out -- the stylized illustrations are gorgeous.