In addition, the Chicago, St. Paul, Minneapolis and Omaha Railway (Omaha Road) bought seven, classifying them as class G-3 The locomotives had a boiler pressurized to 200 pounds-force per square inch (1.38 MPa) providing steam to two cylinders with a 20-inch (508 mm) bore and a 26-inch (660 mm) stroke.

In September 1904, ALCO announced their introduction to steam locomotives with superheated boilers, following some successful test runs by a European locomotive at a St. Louis exhibition.

[3] The C&NW subsequently asked ALCO to construct one D class 4-4-2 (No.

The class D locomotives were quite capable of pulling a 10-car, 400-ton train on the 138-mile Chicago to Clinton route in 3 hours 25 minutes inclusive of eleven stops.

On the Omaha Road, one of the later uses of their class G-3 was powering the Minneapolis to Ashland train The Namakagon substituting for the regular gas-electric car when it was in the shops or the load exceeded its two-car capacity.