"A millionaire by age twenty-one, Kennedy was our wealthiest
President. The only President besides George Washington to decline his
salary, he donated his to the Boy Scouts and Girl Scouts, the United
Negro College Fund and Jewish organizations."
"Lives of the Presidents: Fame, Shame (and What the Neighbors Thought)"
by Kathleen Krull, read using the "search inside" feature at Amazon.com:
"His $100,000 salary as President was being divided, after taxes,
among two dozen charities, including the Boy Scouts and Girl Scouts of
America, the United Negro College Fund, and the Federation of Jewish
Philanthropies. The schedule of contributions was worked out each year
during a short money meeting Kennedy had with a family accountant
named Thomas Walsh."
"PRESIDENT KENNEDY: PROFILE OF POWER"
by Richard Reeves, read using the "search inside" feature at Amazon.com:
"He donated his entire presidential salary of $100,000 to charity,
ranging from hospitals to the Boy and Girl Scouts, to Jewish
philanthropies and retarded children's associations. In 1962, however,
he chose to make what were clearly strategically political
contributions with his private funds?the United Negro College Fund and
the Cuban Families Committee."
"The Kennedy White House : Family Life and Pictures, 1961-1963"
by Carl Sferrazza Anthony, read using the "search inside" feature at Amazon.com:
amazon.com search inside:
kennedy, donated, salary
kennedy, salary, "girl scouts"
I hope this helps.