 A conventional series-parallel controller was used for the traction motors.A prototype was built in 1889, an experimental tram car was run in Pullman, Illinois in 1891, and a production locomotive was sold to a street railway company in Cedar Falls, Iowa in 1897.In 1896, the Armstrong Phaeton was developed by Harry E. Dey and built by the Armstrong Company of Bridgeport, CT for the Roger Mechanical Carriage Company.