14 January 2017
Warren County, Missouri
1877
An Illustrated Historical Atlas of Warren County, Missouri, compiled, drawn and published from personal examinations and surveys by Edwards Brothers, of Missouri. (Philadelphia, Pennsylvania: Edwards Brothers, of Missouri, 1877), page 5.
This map shows both the civil townships of Warren County in 1877 - Camp Branch, Bridgeport, Elkhorn, Hickory Grove, Pinkney and Charrette - as well as the survey townships. None of the civil townships is exactly equivalent to a survey township of 36 sections.
Wikipedia is a handy online source for the distinction between a civil township and a survey township.