Annie's Arbor Day - Provides information about the holiday's history and includes Bible verses about trees.
Arbor Day - Features timetable of the holiday's development. From Ohio Division of Forestry.
Arbor Day - The history of the observance with information about international "tree" celebrations. Find out when each U.S. state celebrates Arbor Day.
The Arbor Day Foundation - Provides resources for the nationally-celebrated observance that encourages tree planting and tree care.
Arbor Day Information - Features trivia quiz, scavenger hunt suggestions, historical information, and tips for tree planters.
Celebrating Arbor Day at The Holiday Zone - Offers brief history, art and craft activities, songs, action rhymes, word puzzles, coloring pages, printable worksheets, word wall, and poems.
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.
J. Sterling Morton Creates Arbor Day - Online exhibit from Nebraska State Historical Society includes an excerpt from Morton's diary written two days before the first observance.
Teachers' Guide to Arbor Month - Printable PDF guides for kindergarten through middle school teachers from the Minnesota Department of Natural Resources.
