“This land is your land, this land is my land.” – Woody Guthrie

If you take Woody Guthrie’s famous words literally, you might be interested in National Public Lands Day, which just happens to be tomorrow, Saturday, September 28. Public lands belong to all Americans . . . and just like your own backyard, sometimes these spaces need a little work!

To celebrate National Public Lands Day, volunteers will gather together at sites as varied as state parks, community gardens, beaches, and wildlife preserves to lend a helping hand. You can find a place that’s looking for volunteers in your area by visiting http://www.publiclandsday.org/npld-sites.

This year’s celebration marks the 20th annual National Public Lands Day. In honor of the anniversary, here’s a quick stamp quiz:

Which two 2013 stamps depict places where you can volunteer on September 28th?

Answer: The 1963 March on Washington and The Civil War: 1863

The 1963 March on Washington stamp showcases the National Mall in Washington, D.C. On National Public Lands Day, volunteers will rake leaves, pick up litter, and beautify the area.

One of the two stamps included on depicts the Battle of Vicksburg. Volunteers at Vicksburg National Military Park will plant roses at the historic Shirley House on September 28.

Public lands are perennial stamp subjects. (In 2012, they were shown on the New Mexico Statehood and the Glacier National Park stamps). Pitching in on this special Saturday is a way to keep these lands healthy and beautiful for future generations . . . and for future stamps!