Things you never knew about The Princess and Frog Sources: Thompson, Stith. The Folktale. University of California Press.; Zipes, Jack. (2016). The Original Folk and Fairy Tales of the Brothers Grimm: The complete first edition; Ashliman, D. L. (2005). "The Frog King or Iron Heinrich"; ED Baker The Frog Princess; NERDSociety; Kurtti, Jeff (2009). The Art of The Princess and the Frog; Dark Horizons; The Independent; Laughing Place; AWN Headline News; Princess and The Frog DVD; The Times Picauyune