• George B. Miller was the president of the Waterloo Gasoline Engine Company.
• In 1899 George B. Miller purchased his brother's and the others' interests in the factory.
• The company was one of the most extensive and important industries in Waterloo in 1915.
• The company consisted of four buildings including a main building, two smaller buildings and a foundry.
• The company employed seven hundred workers in 1915.
• The company manufactured gas engines, traction engines, spreaders, cream separators and a number of smaller articles.
• The plant was equipped with the most up-to-date and efficient equipment for 1915.

Source: John C. Hartman's History of Black Hawk County, Iowa, and its people, Volume II, 1915.