Dr. Stuart Brown is a leading play expert who has researched and written about the significance of play in the lives of animals and humans and how free play develops the social and locomotive skills in children that are necessary in life. He founded the National Institute for Play to focus on the research on play.

Amy Jaffe Barzach founded Jonathan's Dream, which led to Boundless Playgrounds mission to create truly accessible and integrated playgrounds within reach of every child. Boundless Playgrounds raised awareness of the play needs of all people and in the process was instrumental in helping raise the standards in the playground industry.

Dr. Keith M. Christensen is a landscape architect, professor, researcher, and the founder and director of Beyond Access, a program which offers technical assistance when designing inclusive play environments. He believes that "Inclusive play experiences help children with and without disabilities discover that they are competent and capable, able to take risks, climb higher, think harder, and foster friendships."

The National Recreation Association was originally called the Playground Association of America (PAA), which was formed in 1906 to further the playground movement in America. Over the years the mission of the organization shifted from playgrounds to emphasize a broad spectrum of recreation activities for all ages and abilities.

We Can! (Ways to Enhance Children's Activity & Nutrition) is a national education program for parents, caregivers, and communities that assists children 8 to 13 years of age to obtain and maintain a healthy weight.