Outline map of the lines of the Chicago, Milwaukee & St. Paul Railway Company, Chicago, Milwaukee & Puget Sound Railway Company, and Tacoma Eastern Railway Company : June 30, 1912.
MLA
McNally, Rand, and Company. Outline Map of the Lines of the Chicago, Milwaukee & St. Paul Railway Company, Chicago, Milwaukee & Puget Sound Railway Company, and Tacoma Eastern Railway Company : June 30, 1912. Rand McNally & Co., 0AD. https://collections.library.yale.edu/catalog/15813041.
APA, 6th edition
McNally, R., & C. (0 C.E.). Outline map of the lines of the Chicago, Milwaukee & St. Paul Railway Company, Chicago, Milwaukee & Puget Sound Railway Company, and Tacoma Eastern Railway Company : June 30, 1912. [Maps]. Rand McNally & Co., https://collections.library.yale.edu/catalog/15813041.