Map of Colorado Springs, Colorado City and vicinity / compiled from city and county records by E.R. Warren, C.E.
MLA
Warren, E. R. Map of Colorado Springs, Colorado City and Vicinity / Compiled from City and County Records by E.R. Warren, C.E. Denver Litho. Co., 0AD. https://collections.library.yale.edu/catalog/15818435.
APA, 6th edition
Warren, E. R. (0 C.E.). Map of Colorado Springs, Colorado City and vicinity / compiled from city and county records by E.R. Warren, C.E. [Maps]. Denver Litho. Co., https://collections.library.yale.edu/catalog/15818435.