New York Times graphics editor Tim Wallace stumbled across a 1908 Chicago Tribune cartoon by John T. McCutcheon that’s older than other examples of “perception-based” maps he was aware of.
Perception-based map genre is at least 30 years older than I thought it was. Finance Committee 1908 @chicagotribune pic.twitter.com/bDnAjei8r6
— Tim Wallace (@wallacetim) March 16, 2016
(Though my previous entry contained a link to a 1922 McCutcheon cartoon, which only moves the clock back only 14 years.)