Spoiler : Born in New York City 7/8/1900 (some say 1901); died 2/20/1983 of a brain tumor in New York City. Married to attorney Louis S. Waters (?-1943 his death); attorney Norman Annenberg (1947-?). Klein attended college in New York City before making her radio debut in 1929 as a vocalist.

Spoiler : One of three actresses to play the Dragon Lady on Terry And The Pirates for the NBC and ABC Radio Networks and WGN-Chicago (1937-1948). Star of Wings For The Martins on NBC-Radio (1938). Mildred Farrell on the CBS, NBC and ABC Radio Network soap, Valiant Lady (1938?-1952?). Mrs. S. Kent Wadsworth on the NBC and CBS Radio Network soap, Life Can Be Beautiful (1938-1954?). Agatha Meek on Meet Mr. Meek for CBS-Radio (1940-1942). The Russian Countess on The House On Q Street for NBC-BLUE (1943-1944).

Spoiler : Regular performer on radio programs including Les Miserables for WOR-New York (1937); So This Is Radio for CBS (1939); The Columbia Workshop (Twenty-Six By Corwin) for CBS (1941); Jack And Cliff for NBC (1948); The Marriage for NBC (1953-1954).

Spoiler : Klein only appeared in three movies, making her debut playing Mrs. Paula Batory in The Naked City (1948), then played Minnie Hoffman in C-Man (1948), and for her last movie she played the psychiatrist in The Troublemaker (1964).

Spoiler : Klein was also a television actor from the early 1950s to the late 1950s. Played the landlady on Two Girls Named Smith for ABC-TV (1951).