If your book was published by Grosset & Dunlap it might have a value of $75-200 based on books I found. Here is an example of a $100 book offered by Thom books:
"NY: Grosset & Dunlap, (1938). Hardcover. Near fine. Oblong 8vo. [36]pp. Illustrated in color and black & white. Blue cloth spine, pictorial flower-design boards depicting Snow White and the Dwarfs on the upper board. The second book adaptation of the Disney film. Cloth spine shows light wear else a fine copy."