Sepia photograph of the historic marker at the Concord School House. Marker reads, "The Concord School House // Erected by Private Subscription in 1775 // Birthplace of the Junior Order // United American Mechanics // By the Institution of the Washington Council No. 1 // May 17th 1853 // Erected by the Wahington Council No. 1 Jr. O. U. A. M. // May 1910"