The Library recently acquired Règlement General pour Dresser les Manufactures, or General Regulations for the Establishment of Manufactures published in 1597!
Today, our beloved bottles of ketchup are consistent and shelf-stable thanks to the work of Katherine and Arvill Bitting who examined over 1,600 bottles of ketchup, visited 40 canneries producing tomato pulp, and toured 20 ketchup factories to come up with a method to make a safe and preservative-free ketchup.