A book I'm reading that might interest you :
Amazon.com: Children at Play: An American History: Books: Howard Chudacoff
Also -
Amazon.com: Children and Nature: Psychological, Sociocultural, and Evolutionary Investigations: Books: Peter H., Jr. Kahn,Stephen R. Kellert
Amazon.com: Children's Special Places: Exploring the Role of Forts, Dens, and Bush Houses in Middle Childhood (The Child in the City Series) (The Child in the City Series): Books: David Sobel
Amazon.com: Children at Play: An American History: Books: Howard Chudacoff
Also -
Amazon.com: Children and Nature: Psychological, Sociocultural, and Evolutionary Investigations: Books: Peter H., Jr. Kahn,Stephen R. Kellert
Amazon.com: Children's Special Places: Exploring the Role of Forts, Dens, and Bush Houses in Middle Childhood (The Child in the City Series) (The Child in the City Series): Books: David Sobel