Horse Car
1871-1872 - Denver Horse Railroad Co.
1872-1891 - Denver City Railway Co.
1886-1895 - Denver Tramway Co.
1895-1899 - Denver Consolidated Tramway Co.
1889-1899 - horse cars replaced with electric streetcars
1888-1900 - operated cable cars
1893-1909 - operated steam dummy
1899-1914 - Denver City Tramway Co.
1914-1971 - Denver Tramway Corp.
1950 - streetcars discontinued
1940-1955 - operated trolleybuses
1971-1973 - Denver Metro Transit
Interurban Denver-Golden
(steam powered 1893-1909)
1893-1904 - Denver Lakewood & Golden Railroad Co.
1904-1907 - Denver & Inter-Mountain Railway Co.
1907-1910 - Inter-Mountain Railway Co.
1910-1911 - Denver & Inter-Mountain Railway Co.
1911-1916 - Denver & Inter-Mountain Railroad Co.
1916-1950 - Denver & Intermountain Railroad Co.
1950 - interurban trains replaced with buses
1950-1971 - Denver Tramway Corp.
1971-1973 - Denver Metro Transit
Interurban Denver-Leyden/Golden
1903-1914 - Denver & Northwestern Railway Co.
1914-1916 - Denver Tramway Corp.
1916-1950 - Denver & Intermountain Railroad Co.
1950 - interurban trains replaced with buses
1950-1971 - Denver Tramway Corp.
1971-1973 - Denver Metro Transit
Interurban Denver-Boulder
1908-1926 - Denver & Interurban Railroad Co.
1925 - buses introduced by affiliated company Denver & Interurban Motor Co.
1926 - interurban trains discontinued
1925-1938 - Denver & Interurban Motor Co.
1938-1942 - Denver & Interurban Motor Co./Denver & Interurban Trailways
1942-1947 - Burlington Transportation Co./Burlington Trailways
1947-1975 - Denver-Boulder Bus Co.
Boulder
Horse Car
1891-1899 - Boulder Street Railway Co.
1899 - horse cars replaced with electric streetcars operated by new company
1899-1902 - Boulder Railway & Utility Co.
1902-1913 - Boulder Electric Light & Power Co.
1913-1915 - Northern Colorado Power Co.
1915-1923 - Western Light & Power Co.
1923-1975 - Public Service Co. of Colorado
1932 - streetcars replaced with buses
CURRENT TRANSIT SYSTEM (SINCE 1973)
Regional Transportation District
Historic suburban/interurban bus lines operated by several companies (mostly a 1952 sampling)