MLA

Company, Kansas Pacific Railway. Go to Kansas or Colorado by Way of St. Louis and Kansas City over the Missouri Pacific and Kansas Pacific Railways. 1873. https://collections.library.yale.edu/catalog/2032084.

APA, 6th edition

Company, K. P. R. (1873). Go to Kansas or Colorado by way of St. Louis and Kansas City over the Missouri Pacific and Kansas Pacific Railways [Advertisements, Promotional literature]. https://collections.library.yale.edu/catalog/2032084.