Arbor Day

Arbor Day is a civic observance established in 1872 to formally acknowledge the presence of trees. Originally marked through organized planting efforts, it later became standardized as a recurring date of recognition, with observance practices varying by region and period.

Over time, Arbor Day shifted from a participatory event to a primarily ceremonial one, maintained through proclamations, school notices, and administrative acknowledgment. The observance continues to exist as part of the public calendar, regardless of activity level.

This collection records Arbor Day as an historical constant rather than a celebration. The designs reference official language, dated anniversaries, and procedural recognition, documenting the observance as it has been noted, observed, and filed.