Which president donated his salary to the Boy Scouts and Girl Scouts?

Herbert Hoover and John F. Kennedy were the two presidents who donated their presidential salaries to charity.

Herbert Hoover's wife, Lou Henry Hoover, was an active member of the Girl Scouts of the USA, including leading the organization for many years.

John F. Kennedy donated his presidential salary to Boy Scouts, Girl Scouts, the United Negro Collge Fund, and the Federation of Jewish Philanthropies.