ARBOR DAY
Adair's new Encyclopedia · 1923 · p. 4
a yearly tree-planting day adopted by the majority of states, by some of them as a legal holiday, celebrated on varying dates by the different states. It originated through the growing alarm over the depletion of the American forests, and was intended to encourage the school children to devote one day in the year to planting seedlings. The pioneer state in observing the day was Nebraska, where the observance began in April, 1872. The date of celebration in the different states varies according to climate. In general it is early in the year in the South; in January, in Florida, while some of the more northern states do not observe it till April or May. The ‘golden Anniversary’ of Arbor Day was celebrated throughout the whole country on April 22, 1922, as a part of Forest Protection Week, by a proclamation from President Harding.
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