DescriptionA postally-used, first day cover envelope from the 1957 centennial anniversary of Millburn. On the left side of the front of the envelope is a symbol of an hourglass with the high school and a mill in it and a ribbon marked "A Century of Township Progress," in blue ink. On the back of the envelope is stamped "William J. Harder; 642 Morris Tpk; Millburn, N.J." The envelope has very faint soiling on the back and is very lightly yellowed, with light bleed-through of the adhesive on the back flap. There are no contents in the envelope.