Mary Coffin Ware Dennett, a supporter of sex education for children in the US in the early twentieth century, wrote The Sex Education of Children: A Book for Parents as a resource for parents teaching their children about sex. Vanguard Press in New York City, New York, published The Sex Education of Children in 1931. Dennett’s book addresses issues that Dennett argued parents should know about sex to provide their children with an accurate portrayal of the topic. In addition to expressing Dennett’s views on sex education, The Sex Education of Children was one of the few works during the early 1900s in the US to advocate for increased communication with children about reproductive health.