Oscar Clendenning Hammerstein II (1895-1960) was perhaps the most influential lyricist and librettist of the American theater. Major musicals for which he wrote the lyrics include “Show Boat,” “South Pacific,” “The King and I,” and “The Sound of Music.”
Oscar Hammerstein II~
http://www.pbs.org/wnet/broadway/stars/oscar-hammerstein-ii/

https://www.ibdb.com/broadway-cast-staff/oscar-hammerstein-ii-7965