Original Lost in Space Cast
Before You Dive Into the Lost in Space Reboot, Check Out the Original Cast
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Lockhart played Dr. Maureen Robinson, a biochemist and matriarch of the family. The actress is best known for playing Timmy's mother on Lassie and recurring on General Hospital in the 1980s and 1990s. She also won a Tony in 1948 for her role in For Love or Money on Broadway.