Pennsylvania Famous People

Pennsylvania Inventors

Edward Goodrich Acheson Carborundum - Walter E. Diemer Bubble Gum - Robert Fulton Steamboat - William Edward Hanford Polyurethane - Stephanie Louise Kwolek Kevlar - John Backus Fortran Programming Language - Milton Hershey Hershey's Chocolate - Oliver Evans designed the first refrigeration machine - Anna Keichline K-Brick - Charles Darrow Monopoly Board Game - Betty James Slinky Toy - William Henry Early Steam Paddle Boat - Walter Sammons Improved Comb

Pennsylvania Famous People

Pennsylvania Famous People - Pennsylvania Famous People