. . "Denver (Colo.)" . . . . . "A detailed history of the Denver trolley cars of the early 20th century includes more than 200 photographs." . "Nostalgic look at Denver in the era of the streetcars" . . . . . . . . "History"@en . . . "Mile-high trolleys : a nostalgic look at Denver in the era of the streetcars" . "Mile-high trolleys : a nostalgic look at Denver in the era of the streetcars"@en . . . . . . . "Mile-high trolleys: a nostalgic look at Denver in the era of the streetcars/cWilliam C. Jones ... et al"@en . .