Tug (?) ROBT. L. STEVENS of Rock Plaster Manufacturing Co., sunk, port view, with sand bags, city pier gelatin glass negative Chapman Derrick & Wrecking Co. 1964.660.2713 ViewRock Plaster Manufacturing Co. steamboat ROBERT L. STEVENS sunk at dock, circa 1923 gelatin silver print Merritt-Chapman & Scott Corporation circa 1923 2008.28.5.387 View