Al Dubin (June 10, 1891 - February 11, 1945) was a Jewish-American Swiss-born lyricist. He was born in Zurich, Switzerland and died in New York City.
Dubin was responsible for lyrics to several Broadway shows. In 1970 he was inducted into the Songwriters Hall of Fame.
http://en.wikipedia.org/wiki/Al_Dubin

Harry Warren (December 24, 1893 – September 22, 1981; born Salvatore Antonio Guaragna in Brooklyn, New York) was an Italian-American composer and lyricist.
http://en.wikipedia.org/wiki/Harry_Warren