Lines of Transportation / compiled and drawn by R. Baxter Blair.
MLA
Lines of Transportation / Compiled and Drawn by R. Baxter Blair. Denoyer-Geppert Company, 1919. https://collections.library.yale.edu/catalog/15827811.
APA, 6th edition
Lines of Transportation / compiled and drawn by R. Baxter Blair. (1919). [Maps]. Denoyer-Geppert Company, https://collections.library.yale.edu/catalog/15827811.