Peach Bottom Slate Region
Peach Bottom Slate, first used 1734, is the oldest in America. The first commercial cut having been made 1785 by workmen who were primarily Welsh. At the London Crystal Palace Exposition, 1850, Peach Bottom Slate was judged best in the world.
Marker is at the intersection of Pylesville Road and Whiteford Road, on the right when traveling north on Pylesville Road.
Courtesy hmdb.org
