The history of canning

I found this fascinating article on the history of canning today. Part of
the tradition of McCall's candle canning.

ABOUT CANNED FOOD: WHENCE IT CAME:
THE HISTORY OF FOOD CANNING

The canning process dates back to the late 18th century in France when the Emperor Napoleon Bonaparte, concerned about keeping his armies fed, offered a cash prize to whoever could develop a reliable method of food preservation. Nicholas Appert conceived the idea of preserving...