Milwaukee Road Engine No. 261 Basic Information..
Builder: Alco (Schenectady) on 6/1944, Construction No.: 71974
Height: 15′ 6″ and Length: 109′ 7-3/4″
Total Empty Weight in working order: 460,000 lbs (Leading Truck: 87,000 lbs, Driving: 259,300 lbs, Trailing Trucks: 113,700 lbs) and Wheels: 4-8-4
Weight on Drivers: 259,300 and Driver Diameter: 74

Tender Type: 12-wheeled; consisting of two 6 wheel trucks
Weight of Tender with fuel: 364,100 Lbs
Coal Capacity: 25 Tons and Water Capacity: 20,000 Gallons.

Boiler Pressure: 250 Lbs and Cylinders: 26×32″
Tractive Effort: 62,119 Lbs and Factor of Adhesion: 4.18
Fire Box Area: 144 9/16th” x 96 1/4″ and Grate Area: 92.6 Sq. Ft.
Tubes: 197 Tubes 2 1/4″ and Flues: 58 Flues 5 1/2″ = Total Length: 20.0 Ft
Total Evaporating Area: 4477.5 Sq Ft. and Total Heating Surface: 1,438 Sq Ft.

Location: BN Harrison Street, Minneapolis, MN, United States
Source: 261.com/261-stats