The information presented on the lives and work of Eric Carle and Lois Ehlert came from the following resources:
Online
https://biography.jrank.org/pages/1783/Carle-Eric-1929.html
https://www.britannica.com/biography/Eric-Carle
https://www.carlemuseum.org/content/history
https://www.carlemuseum.org/content/museum-mourns-loss-co-founder-barbara-carle
http://www.eric-carle.com/awards.html
http://www.eric-carle.com/bio.html
http://www.eric-carle.com/q-wife.html
https://loisehlert.weebly.com/biography.html
https://www.nccil.org/artists/eric-carle
https://www.npr.org/2007/07/15/11889867/eric-carles-colorful-world-of-childrens-books
http://www.readingrockets.org/authors/eric-carle
Carle, E. (1996). The Art of Eric Carle. New York, NY: Philomel.
Ehlert, L. (2013). The scraps book: Notes from a colorful life. New York, NY: Beach Lane Books.
Eric Carle: United States illustrator. (2010, April). Bookbird: A Journal of International Children’s Literature, 48(2), 55. doi:10.1353/bkb.0.0259
Glassman, M. (1994, August 29). In the studio with Eric Carle. Publishers Weekly, 241(35), 26-27. Retrieved from Gale Literature Resource Center
Klingberg, D. (1977, April). Profile: Eric Carle. Language Arts, 54(4), 445-452. Retrieved from JSTOR.
Primm, E. R. (2003). Favorite children’s authors and illustrators. Excelsior, MN: Tradition Books.