Delaware Street Tramway Power Sub-Station (Denver Mint Tramway Pressroom), Denver Colorada
The Delaware Street Tramway Power Substation 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. The building was later (1964?) converted to a coin stamping plant for the Denver Mint.