Useful links

• 4-H National headquarters: www.national4-hheadquarters.gov
• American Alliance for Health, Physical Education, Recreation and Dance: www.aahperd.org
• American Association for the Child’s Right to Play: www.ipausa.org
• American Association for Health Education: www.aahperd.org/aahe/
• American Association for Physical Activity and Recreation (AAPAR): www.aahperd.org/aapar
• American Horticultural society: www.ahs.org
• American Horticultural Therapy Association: www.ahta.org
• American Nursery & Landscape Association: www.anla.org
• American Planning Association: www.planning.org
• American Society of Landscape Architects: www.asla.org
• American Society for Testing and Materials (ASTM): www.astm.org
• Association of Children’s Museums: www.childrensmuseums.org
• Boston Schoolyard Initiative: www.schoolyards.org/
• Children & Nature Network: www.cnaturenet.org
• City Mayors: www.citymayors.com/orgs/natleague.html
• National Association for Girls and Women in Sports: www.aahperd.org/nagws/
• National Association for Sport and Physical Education: www.aahperd.org/naspe/
• National Association for the Education of Young Children: www.naeyc.org
• National Center on Physical Activity and Disability: www.ncpad.org/
• National Gardening Association: www.garden.org
• National Garden Clubs: www.gardenclubs.org
• National League of Cities: www.nlc.org
• National Parent Teacher Association PTA: www.pta.org
• National Park Service: www.nps.gov
• National Parks and Recreation Association: www.nrpa.org
• National School Boards Association: www.nsba.org
• National Town Builders Association: www.ntba.net
• National Wildlife Federation, Schoolyard Habitat: www.nwf.org/schoolyard
• Natural Learning Initiative, NC State University: www.naturalearning.org
• No Child Left Inside Coalition: www.cbf.org/site/PageServer?pagename=act_sub_actioncenter_federal_NCLB
• Outdoor Foundation: www.outdoorfoundation.org
• PlayCore: www.playcore.com
• Trust for Public Land: www.tpl.org
• US Access Board: www.access-board.gov
• USDA Hardiness Zone Map: www.usna.usda.gov/Hardzone/ushzmap.html

Useful books and publications

• American Society for Testing and Materials (ASTM) Standard F1487-07ae1. Standard Consumer Safety Performance Specification for Playground Equipment for Public Use. West Conshohocken, PA: ASTM International.
• American Standard for Nursery Stock (ANSI Z60.1 - 2004). Washington, DC: American Nursery & Landscape Association.
• Center for Persons with Disabilities, Utah State University. 2008. Everybody Plays! Chattanooga, TN: PlayCore, Inc.
• Dirr, M. 1998. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses (Fifth Edition). Champaign, IL: Stipes Publishing.
• Dirr, M. 1997. Hardy Trees and Shrubs. Portland, OR: Timber Press (500 species and 700 cultivar descriptions accompanied by over 1,600 color photographs).
• Frost, J., Brown, P., Sutterby, J., and Thornton, C. 2004. The Developmental Benefits of Playgrounds. Olney, MD: Association for Childhood International.
• Frost, J., Wortham, S. and Reifel, S. 2001. Play and Child Development. Upper Saddle River, NJ: Prentice-Hall.
• Moore, R. 1993. Plants for Play: A Plant Selection Guide for Children's Outdoor Environments. Berkeley, CA: MIG Communications.
• Moore, R. and Wong, H. 1997. Natural Learning: Creating Environments for Rediscovering Nature’s Way of Teaching. Berkeley, CA: MIG Communications.
• Moore, R., Goltsman, S. and Iacofano, D. 1992. Play For All Guidelines: Planning, Design and Management of Outdoor Settings for All Children. Berkeley, CA: MIG Communications.
• Public Playground Safety Handbook. 2008. Washington, DC: United States Consumer Product Safety Commission.

Additional literature can be accessed at the Natural Learning Initiative website: www.naturalearning.org