See You At The Bar-Mitzvah
Aired on March 3, 1963.
A line said by a character in reference to a binding lease from a landlord, "the Kennedys should have such a lease on the white house, they should live there forever."
This is actually the second episode that makes a presidential reference close to Kennedy's assassination. An episode of The Lucy Show, Lucy Visits The White House, aired March 25, 1963, with Lucy visiting the president.