After the boom years of World War I and its aftermath, Baldwin's business would decline as the Great Depression gripped the country and diesel locomotives became the growth market on American railways towards the end of the 1930s. During the 1920s the major locomotive manufacturers had strong incentives to maintain the dominance of the steam engine. The Baldwin-Westinghouse consortium, which had produced electric locomotives since 1904, was in fact the first American locomotive builder to develop a road diesel locomotive, in 1925. Its twin-engine design was not successful, and the unit was scrapped after a short testing and demonstration period. Westinghouse and Baldwin collaborated again in 1929 to build switching and road locomotives (the latter through Baldwin's subsidiary Canadian Locomotive Company). The road locomotives, Canadian National No. 9000 and No. 9001, proved expensive, unreliable, frequently out of service, and were soon retired. Westinghouse cancelled its efforts in the diesel locomotive field with the onset of the Great Depression, opting to supply electrical parts instead. The early, unsuccessful efforts of Baldwin-Westinghouse in developing diesel-electric locomotion for mainline service led Baldwin in the 1930s to discount the possibility that diesel could replace steam. In 1930 Samuel Vauclain, Chairman of the Board, stated in a speech that advances in steam technology would ensure the dominance of the steam engine until at least 1980. Baldwin's Vice President and Director of Sales stated in December 1937 that "Some time in the future, when all this is reviewed, it will be found that our railroads are no more dieselized than they electrified". Baldwin had deep roots in the steam locomotive industry and may have been influenced by heavy investment in its Eddystone plant, which had left them overextended financially and operating at a fraction of capacity as the market for steam locomotives declined in the 1930s. In contrast, ALCO, while remaining committed to steam production, pursued R&D paths centered on both steam mainline engines and diesel switch engines in the 1920s and '30s, which would position them to compete in the future market for diesel locomotives. In 1928 Baldwin began an attempt to diversify its product line to include small internal combustion-electric locomotives but the Great Depression thwarted these efforts, eventually leading Baldwin to declare bankruptcy in 1935. At the invitation of the owners of the Geo D. Whitcomb Company, a small manufacturer of gasoline and diesel industrial locomotives in Rochelle, Illinois, Baldwin agreed to participate in a recapitalization program, purchasing about half of the issued stock.