Guest: John Barkhausen
Gutenberg: How One Man Remade the World With Words by John Man
Gunpowder: Alchemy, Bombards and Pyrotechnics: The History of the Explosive that Changed the World by Jack Kelly (Regional)
Inventors and Discoverers: Changing Our World (609)
Invention in America: With Images from the Library of Congress by Russell Bourne (Joslin Memorial Library 609.73)
They Made America: [...]
