The Mother of a Movement tells the story of Jeanne Manford, the founder of PFLAG (Parents, Families, and Friends of Lesbians and Gays). When her son Morty was beaten by New York City officials for handing out pro-gay leaflets, Manford wrote a powerful letter to the New York Post to complain about how Morty was treated. In the letter she came out as the mother of a gay son. The letter was published. Morty invited his mother to march with him in the June 1972 Christopher Street Parade. While marching, she had the idea to form a group to help parents and families of LGBTQ+ people. That was the beginning of PFLAG.

Sam Kalda is an illustrator and artist based in Saint Paul. His commissioned works include editorial, book, advertising and pattern illustration. In 2017, he received a gold medal in book illustration from the Society of Illustrators in New York. His first book, Of Cats and Men: History's Great Cat-loving Artists, Writers, Thinkers and Statesmen, was published in 2017 with Ten Speed Press. He is the illustrator of When We Walked on the Moon, and the follow-up, When Darwin Sailed the Sea. Visit samkalda.com.