Great American Songwriters Series: John Johnson, Entertainer and Scholar presents Genius of Simplicity: Johnny Mercer Thursday, March 26 Noon to 1:00 P.M. Paley Library Lecture Hall Johnny Mercer (1909–1976) worked as an actor, singer, songwriter, and businessman, but was best known for his genius as a lyricist.  At the age of 19, Mercer moved to New…