Is Mr. Mann There?    (April Fool's Day - 1912)

A prankster circulated notes informing people that Mr. Mann wanted to speak with them and to please return his call. When the recipients of the notes did so, they reached the offices of the Woman's Suffrage Party. After receiving a number of calls asking for Mr. Mann, the office staff realized the nature of the prank and turned the joke on its head by using it as an opportunity to advertise an upcoming Broadway matinee sponsored by the party, informing the callers that Mr. Mann hoped to see them there. The staff estimated they received 100 calls for Mr. Mann.