[2] Growing Pains, a book of excerpts from the diaries of her teen and young adult years, received widespread critical acclaim.

[6] His final words to her were: "Was der Papa nicht thun konnt', muss die Wanda halt fertig machen."

In 1913, Gág began a platonic relationship with University of Minnesota medical student Edgar T. Herrmann who exposed her to new ideas in art, politics and philosophy.

[14] In 1917, Gág won a scholarship to the Art Students League of New York[15] where she took classes in composition, etching and advertising illustration.

[21] She began to sell her lithographs, linoleum block prints, water colors and drawings through the Weyhe gallery where she had developed a relationship with its manager, Carl Zigrosser.

[21][22][23]Gág's one-woman-show there in 1927 led to her being acclaimed as "… one of America’s most promising young graphic artists… " [24] In 1927, her article These Modern Women: A Hotbed of Feminists was published in The Nation, drawing the attention of Alfred Stieglitz and prompting Egmont Arens to write: "The way you solved that problem (her relationship with men) seems to me to be the most illuminating part of your career.

[27][28] In a 1929 New York Times review, Elisabeth Luther Cary described Gág's print Stone Crusher: "Pure imagination leaps out from dusky shadows and terrifies with light, an emotional source difficult to analyze.

"[29] For a 1934 auction organized by Langston Hughes to raise funds for the defense of the Scottsboro Boys, Gág contributed an original drawing from ABC Bunny, "'F' is for Frog.

"[30][31] Her work was recognized internationally and was selected for inclusion in the American Institute of Graphic Arts Fifty Prints of the Year in 1928, 1929, 1931, 1932, 1936, 1937 and 1938.

[34] In 1927 Gág's illustrated story Bunny's Easter Egg was published in John Martin's Book, a magazine for children.

[36] Anne Carroll Moore wrote: "… It bears all the hallmarks of becoming a perennial favorite among children, and it takes a place of its own, both for the originality and strength of its pictures and the living folk-tale quality of its text.

With as sure an instinct for the right word for the ear, as for the right line for the eye, Wanda Gág became quite unconsciously a regenerative force in the field of children's books.

"[42] Two years later she translated and illustrated the Grimm story Snow White and the Seven Dwarfs in reaction to the "trivialized, sterilized, and sentimentalized" Disney movie version.

[48] In addition to Earle Humphreys, her long-time paramour and business manager, Gág had, sometimes concurrently, other lovers: Adolph Dehn, Lewis Gannett, Carl Zigrosser, and Dr. Hugh Darby.

[51] Her childhood home in New Ulm, Minnesota has been restored and is now the Wanda Gág House, a museum that offers tours and educational programs.

[52] In 1992, Millions of Cats was featured on the television series Shelley Duvall's Bedtime Stories, narrated by James Earl Jones.