In 1917, 105 yellow, motorized tour “auto stages” or buses first arrived in Yellowstone Park. The yellow buses made by White Motor Company have a 140-inch wheelbase and a four-cylinder, 45 hp engine.
A fleet of approximately fifty 1917 White touring cars was purchased by YPTCo,
mostly in 1917 but with some added as late as 1924. These sportier touring cars
provided an impressive ride for dignitaries visiting the Park.
There are a combination of features distinguishing this model with a GN engine from the earlier TEB model and the later Model 15-45 buses.
There were only two 1923 Model 50 buses in Yellowstone Park. The Model 50 buses are unique in having a much longer and wider body with seven seats wide enough for four people each.
The curved cowl (below the windshield) and a slightly improved engine distinguish this model from the earlier four-seat touring buses with fold-down tops.
Sporty, chauffeur-driven touring cars were used for giving visiting dignitaries and other tourists a special ride to see the sites in the Park.
By the 1930s, the Model 15-45 buses were looking dated, especially for the well-to-do passengers. So, YPTCo ordered eight larger, 14 passenger buses from White Motor Company.
Ninety-eight Model 706 buses were added to the fleet between 1936 and 1939. These buses have the general appearance of the Model 614 buses of
There have been countless service vehicles that have been used in Yellowstone Park over the years.