I found this very interesting article about a 14 year old boy named Fidel Castro who sent FDR a letter asking for $10. Very interesting, check it out.
In November 1940, a young Fidel Castro wrote a rather cheeky and amusing letter to the then US president Franklin Roosevelt. In the letter, Castro asked Roosevelt for some money — a $10 bill. He even told Roosevelt about Cuba’s largest iron mines:
via Fidel Castro’s Letter To Roosevelt: My Good Friend Roosevelt… — Learn Fun Facts