Cite

The official township map of Humboldt Co., Cal. : carefully compiled from U.S. land and coast surveys, with personal observations / drawn and published by A.J. Doolittle.

MLA

Doolittle, A. J. The Official Township Map of Humboldt Co., Cal. : Carefully Compiled from U.S. Land and Coast Surveys, with Personal Observations / Drawn and Published by A.J. Doolittle. A.J. Doolittle, 1865. https://collections.library.yale.edu/catalog/15818687.

APA, 6th edition

Doolittle, A. J. (1865). The official township map of Humboldt Co., Cal. : carefully compiled from U.S. land and coast surveys, with personal observations / drawn and published by A.J. Doolittle. [Maps]. A.J. Doolittle, https://collections.library.yale.edu/catalog/15818687.