Wednesday, October 25, 2017

Atlas of Historical County Boundaries

The names and boundaries of counties can change over time, causing some confusion for genealogists. This database, provided by the Newberry Library of Chicago, is a good source for clarifying names and boundaries. It includes an interactive map, index, county chronologies, and commentary.

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Ted Talk: How We're Building the World's Largest Family Tree

 From Ted.com in 2018.