Early-1976, a few months after Saturday Night Live made its debut as "NBC's Saturday Night," the following rejection letter was sent to hopeful writers. It was written and signed by the show's creator, Lorne Michaels.
(Source: Saturday Night Live; Image: Lorne Michaels on air in 1976, offering the Beatles $3000 to reunite.)
April 27, 1976
Dear Mr. Currier:
Thank you for your letter. We are sorry but we cannot accept or read unsolicited material sent to us for various ethical and legal reasons.
However, we at NBC's SATURDAY NIGHT do accept and read nude photographs.
Best of luck in the future.