Let us remember the inventor of Jell-o®, Peter Cooper, who was born during George Washington's presidency and without whom we would be missing a major component of vintage_ads.
This link also has important info about the history of Jell-o®; it's unclear whether Peter Cooper's wife, Sarah was the one who named the dessert, or the wife of Pearl B. Wait, who bought the patent from Cooper.
Jell-o® is even more popular than Spam™!
(Where's the Peter Cooper tag? Founder's Day is February 12; we might have a day-long tribute to Jell-O® on that day.)