Tugboats M. MITCHELL DAVIS and PENACOOK probably at launching of submarine BARRACUDA, Portsmouth Navy Yard, Kittery, ME, 1924 real photo postcard 1924 2014.49.9368 ViewTugboats M. MITCHELL DAVIS and JAMES WOOLEY assisting submarine S-48, Portsmouth Navy Yard, Kittery, Maine, circa 1922 real photo postcard, white border circa 1922 2014.49.9706 View