Websites
The Association for the Study of Play (TASP)
Books
Balanced and Barefoot by Angela Hanscom, OTR
Last Child in the Woods by Richard Louv
Free Range Kids by Lenore Skenazy
Natural Playscapes by Rusty Keeler
Free to Learn by Peter Gray, PhD
A Year of Forest School: Outdoor Play and Skill-building Fun for Every Season by Jane Worroll and Peter Houghton