 The original 1914 buses were retrofitted with improved bodies, and new buses were ordered and delivered between 1925 and 1927 after the original buses had aged.The completion of Going-to-the-Sun Road in 1933 forced GPTC to order new buses, as the existing fleet could not traverse Logan Pass.GPTC chose the new White Model 706 along with several other parks; 35 White 706 buses were manufactured for Glacier and delivered between 1936 and 1939, at a cost of each.