Drew Pearson - Before ArcGIS or Adobe Illustrator, geologists drew maps and figures for publication by hand. This image from 1976 shows #DMME drafter Shirley Pearson working on a figure of the Coastal Plain. #ThrowbackThursday https://t.co/TAMZdRdTbw

9:00am PDT - March 25th, 2021

Before ArcGIS or Adobe Illustrator, geologists drew maps and figures for publication by hand. This image from 1976 shows #DMME drafter Shirley Pearson working on a figure of the Coastal Plain. #ThrowbackThursday https://t.co/TAMZdRdTbw

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VA DMME (@DMMEVA)