George Mason University
George Mason University: Midwest Mapping Project [Pdf]
This document details a research project in which four researchers independently created plans for the redistricting of voting districts for both state and federal legislatures, seeking to create voting districts that would meet both...
Wikimedia
Wikipedia: History of 19th Century Congressional Redistricting in Ohio
A history of the reapportionment of Ohio congressional districts between 1812 and 1902.