MapofUS.org Rotating Maps citation

The site MapofUS.org referenced the David Rumsey Historical Map Collection generally, so I am at a loss in how to cite information about county boundary changes.

Does anyone have a citation example where they use this source?

Section 12.63 does not really address this clearly for me.

 

Submitted byEEon Sun, 06/11/2017 - 17:38

lpc123, would you give us a link to the page you're referencing so that we can see the context?  Better yet, how about taking a preliminary stab at constructing the citation yourself? That way, we can discuss the specific issues that are causing some confusion.