Anne of the Thousand Days
Platt's first professional acting experience came in stock theater in Suffern, New York. She went on to act in stock productions "from Maine to Virginia to Minnesota". Her Broadway credits include "The Traitor" (1949), "Anne of the Thousand Days" (1948), "Five Alarm Waltz" (1941), "In Clover" (1937), "Promise" (1936), "Spring Dance" (1936), and "A Room in Red and White" (1936).