Here are some excerpts of the story:
In 2014, as Penn State’s Steidle Building was undergoing renovations, a large—7.5 feet x 17 feet, to be exact—map of Pennsylvania was discovered leaning against the wall of an office.
It turned out to be a relief map, or a map that depicts land configuration and height of land surface, of the state. Made in the late 1800s, the map was displayed at the 1893 World’s Columbian Exposition in Chicago, also known as the Chicago World’s Fair.
The fully restored 7.5 feet by 17 feet plaster relief map of Pennsylvania is displayed in the College of Earth and Mineral Sciences Museum and Art Gallery
It’s great that they were able to restore it. I really want to go see this thing.