Those 19- 1937 Mack Type 21 1000gpm pumpers were originally assigned to engine(s): 20, 34, 36, 46, 50, 53, 55, 59, 64, 69, 154, 210, 229, 231, 245, 249, 283, 290 & 299. These were the first pumpers delivered with solid (not leather) subway straps. Engine 20's had a special box behind the...