Tugboat JOHN K. COWEN assisted by floating derrick MONARCH, circa 1900 gelatin silver print Merritt-Chapman & Scott Corporation after 1900 2008.28.4.250 ViewTugboat JOHN K. COWEN assisted by floating derrick MONARCH, circa 1900 gelatin silver print Merritt-Chapman & Scott Corporation after 1900 2008.28.4.252 View