Maine Central 2-8-0 No. 523 rests near the roundhouse at Rigby Yard, South Portland, Maine in this unattributed view supplied by Carl Weber. The date is August 4, 1948. The W-1 class had a grate area of 50 square feet, with 2292 square feet of evaporative heating surface and 443 square feet of superheating surface. Note the "indirect" or "reverse" arrangement of the Walschaerts valve gear. For other dimensions see the page for No. 519 preceding.