Map of the Warsaw and Rockford R.R. and its connections.
MLA
Map of the Warsaw and Rockford R.R. and Its Connections. Robertson, Seibert & Shearman, Lith., 1860. https://collections.library.yale.edu/catalog/15814442.
APA, 6th edition
Map of the Warsaw and Rockford R.R. and its connections. (1860). [Maps]. Robertson, Seibert & Shearman, Lith., https://collections.library.yale.edu/catalog/15814442.