Ben Franklin left Philly and Boston $1,000 each and after 200 years, that was $2m and $4.5m respectively. https://www.mentalfloss.com/article/627475/200-year-old-gift...
The funds were intended to be loaned to aspiring tradesmen, who would repay their loans with interest over ten years. The two cities would receive some of the funds for public works after 100 years and the balance after 200 years. Both cities failed to manage the funds as Franklin intended.
From Meyer's book, I learned more about Benjamin Franklin's life, about the challenges of fund management, and about the difficulty of controlling events from beyond the grave.
[1] https://www.harpercollins.com/products/benjamin-franklins-la...