Delaware Street Tramway Power Sub-Station, 1448 Delaware Street, Denver, Denver County, CO
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Significance: It is significant for its association with the growth and development of Denver's tramway trolley system, a major transportation system during the first half of the 20th century. This substation was instrumental in the conversion of the system from cable power to effective electrical power. It is more stylistically impressive and retains a greater degree of historic integrity than do the other remaining structures believed to have been substations.
Survey number: HAER CO-12
Building/structure dates: 1913 Initial Construction
Building/structure dates: 1964 Subsequent Work