The Arbor Day Foundation  
   Provides resources for the nationally-celebrated observance that encourages tree planting and tree care.
   http://www.arborday.org/

The History of Arbor Day  
   Explains how the idea of Arbor Day was born out of the settlement of Nebraska's treeless plains.
   http://www.gardengrove.com/treehist.htm

Annie's Arbor Day  
   Provides information about the holiday's history and includes Bible verses about trees.
   http://www.annieshomepage.com/arborday.html

Arbor Day Celebration 2000  
   Features trivia quiz, scavenger hunt suggestions, historical information, and tips for tree planters.
   http://www.idahoforests.org/feature.htm

Arbor Day - Day of Trees  
   Tells about Arbor Day in Australia.
   http://www.calm.wa.gov.au/forest_facts/arbor_day.html

Arbor Day at Holiday Insights  
   Facts and information, links to ecards, and clipart.
   http://holidayinsights.com/other/arbor.htm

Arbor Day in the USA  
   Includes background information, poetry, quotations, and ideas for celebrating the holiday as a family.
   http://www.jeannepasero.com/arborday.html

Arbor Day  
   Features timetable of the holiday's development. From Ohio Division of Forestry.
   http://www.dnr.state.oh.us/htdocs/forestry/education/infoarbor.htm

Indiana Arbor Day  
   Includes information on Arbor Day programs, the history of the observance, celebration ideas for cities and towns, tree planting instructions and links to educational resources.
   http://www.state.in.us/dnr/forestry/education/arborday/