This cartridge box, measuring about 5.5″ x 10″ x 10″ and with a linen strap, is inscribed “Samuel Galpin”. Galpin was listed as a militiaman from Connecticut. For source and more details, click here.
Image from: http://www.cr.nps.gov/museum/exhibits/revwar/image_gal/morrimg/cartboxmorr.html