Lancaster, PA, United States
Andrew Ellicott. Surveyor, mathematician, astronomer. Secretary, Pennsylvania Land Office, 1801-08. In 1803, while living here, he taught Meriwether Lewis surveying and navigation skills. Helped survey & draw boundaries of New York, Pennsylvania, Washington, D.C., & elsewhere.
Listen to the audio guide for Blue plaque № 29051 Free on WIP — starts by itself when you arrive, even with the screen off