- ... that the Pennsylvania Railroad GG1 4859 (pictured) pulled the first electric train from Philadelphia to Harrisburg in 1938 and was designated a state symbol of Pennsylvania in 1987?
- ... that Memorial Park Site in Lock Haven, Pennsylvania, contains prehistoric cultural deposits up to 8,000 years old?
- ... that the Dickson Tavern is the oldest building in Erie, Pennsylvania?
- ... that Charles Mason and Jeremiah Dixon transported their zenith telescope, on a featherbed, 31 miles (50 km) from Philadelphia to Star Gazers' Stone to begin surveying the Mason–Dixon line?
- ... that in the 19th century, Ganoga Lake in Pennsylvania had a hotel, its own ice cutting company, and a branch railroad line to serve both?