"Colorado" . . . . "Biography"@en . . "Publishers' advertisements" . . "Publishers' advertisements"@en . . . . . "Summer vacation in the parks and mountains of Colorado" . "Summer vacation in the parks and mountains of Colorado"@en . . . . . . "Switzerland of america a summer vacaton in the parks and mountains of colorado" . . "The Switzerland of America. A summer vacaton in the parks and mountains of Colorado"@en . . "Colorado, its parks & mountains"@en . . . "Summer vacation in the parks and mountains of Colorado"@en . . . "The Switzerland of America : a summer vacation in the parks and mountains of Colorado" . "The Switzerland of America : a summer vacation in the parks and mountains of Colorado"@en . . . "The Switzerland of America : a summer vacaton in the parks and mountains of Colorado"@en . "Switzerland of America" . "A summer vacation in the parks and mountains of Colorado" . "Summer vacation in the parks and mountains of Colorado (1869)" . "The Switzerland of America. A summer vacation in the parks and mountains of Colorado" . . . . . . "The Switzerland of America a summer vacation in the parks and mountains of Colorado"@en . "The Switzerland of America a summer vacation in the parks and mountains of Colorado" . "Publishers' cloth bindings (Binding)"@en . . "Publishers' cloth bindings (Binding)" . "Colorado : its parks & mountains" . . "The Switzerland of America A summer vacaton in the parks and mountains of Colorado"@en . . . .