The Western trail : vol. xxvi, no. 11, Chicago, November 1906, edition 33,000 : Texas gulf coast issue.
MLA
Chicago, Rock Island, and St. Louis-San Francisco Railway Company Pacific Railway Company. The Western Trail : Vol. Xxvi, No. 11, Chicago, November 1906, Edition 33,000 : Texas Gulf Coast Issue. 1906. https://collections.library.yale.edu/catalog/2031859.
APA, 6th edition
Chicago, R. I., & Pacific Railway Company, S. L.-S. F. R. C. (1906). The Western trail : vol. xxvi, no. 11, Chicago, November 1906, edition 33,000 : Texas gulf coast issue. [Halftones, illustrations (AAT), magazines (periodicals) (AAT), Maps, Photomechanical prints]. https://collections.library.yale.edu/catalog/2031859.