Ingri d’Aulaire (December 27, 1904-October 24, 1980) was a children’s book writer and illustrator, who worked in collaboration with her husband and fellow artist, Edgar Parin d’Aulaire.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Ingri_and_Edgar_Parin_d%27Aulaire

Illustration from The Conquest of the Atlantic by Ingri and Edgar Parin d’Aulaire
1933 / Lithograph / 55 pp, 12″x10″ / Viking Press, New York
https://archive.org/details/conquestofatlant00daul/mode/2up

Ingri d’Aulaire on Goodreads: https://www.goodreads.com/author/show/13561098.Ingri_d_Aulaire

Further reading:
https://www.nyrb.com/collections/ingri-and-edgar-parin-daulaire
https://www.nocloo.com/ingri-edgar-parin-aulaire-biography/
https://kids.britannica.com/students/article/Edgar-Parin-dAulaire-and-Ingri-dAulaire/316738
https://www.atlasobscura.com/articles/the-daulaires-book-of-greek-myths-is-famous-but-what-about-their-forgotten-american-stories