The Waterloo Gasoline Traction Engine Company was renamed the Waterloo Gasoline Engine Company after the company was sold. George Miller, recently graduated from the law department at the University of Iowa, took control of the company. This was a somewhat doubtful enterprise, but Miller was able to help the company rise to a prominent position in the manufacturing world. In 1897, the factory expanded production capabilities with the addition of another building. Dimensionally, the new addition was 50 x 100 feet, with an attached foundry complex that measured 40 x 50 feet. The total employment was twelve employees who produced two engines per week in that year.

     In 1912, the Waterloo Gasoline Engine Company unveiled the model "R." First year sales of the tractor stood at one hundred eighteen. The "R" weighed around 5,240 pounds, had one forward gear, and sold for a modest $ 985.00. In 1915, Waterloo began production of the model "N." The "N" weighed in at 5,930 pounds and sold for $ 1,150.00. The "N" was a far cry from the "R" because it had two forward speeds and produced twelve horsepowers at the drawbar and twenty-five on the pulley. By 1918, more than eight thousand Waterloo Boys, as this tractor was known, had been sold. Actual production of tractors in 1917 had been 4,558, up from 2,762 the previous year. Waterloo was well on its way to becoming famous for manufacturing tractors.