These included Southern Air Transport in Texas, Southern Air Fast Express (SAFE) in the western United States, Universal Aviation in the Midwest (which operated a transcontinental air/rail route in 1929), Thompson Aeronautical Services (which operated a Detroit-Cleveland route beginning in 1929), and Colonial Air Transport in the Northeast.
Это были Southern Air Transport в Техасе, Southern Air Fast Express (SAFE) на западе США, Universal Aviation на среднем западе (которая выполняла трансконтинентальный авиа и ж/д маршрут в 1929 году), Thompson Aeronautical Services (маршрут Детройт-Кливленд с 1929 года), и Colonial Air Transport на северо-востоке.