Cite

Map of the Chicago, R.I. & Pacific R.R. : Chicago to Council Bluffs with its branches and western r.r. connections / engr. by Rufus Blanchard, Chicago, Ill.

MLA

Blanchard, Rufus, 1821-1904. Map of the Chicago, R.I. & Pacific R.R. : Chicago to Council Bluffs with its branches and western r.r. connections / engr. by Rufus Blanchard, Chicago, Ill.. BRBL_00538. 1868. https://collections.library.yale.edu/catalog/15813013.

APA, 6th edition

Blanchard, Rufus, 1821-1904. (["BRBL_00538"])(1868)[Map of the Chicago, R.I. & Pacific R.R. : Chicago to Council Bluffs with its branches and western r.r. connections / engr. by Rufus Blanchard, Chicago, Ill.]. https://collections.library.yale.edu/catalog/15813013.