Carl Weber contributed this view of B&M P-2 Pacific No. 3665 which an unidentified photographer snapped at Boston's North Station on April 21, 1941. Engines of this group had a grate area measuring 53½ square feet, with 3066 square feet of evaporative heating surface plus a superheater surface of 823 square feet. For other specifications refer to the page for No. 3622. Notice that these locomotives had the "indirect" or "reversed" configuration of the Walschaert valve gear.