June Lockhart, warmhearted star of ‘Lassie’ and ‘Lost in Space,’ dies at 100

June Lockhart, an actress who debuted at 8 with the Metropolitan Opera, won a Tony Award at 22 for her Broadway performance as a winsome ingénue and had a long career on television, notably starring as warmhearted matriarchs opposite a collie in “Lassie” and a robot on “Lost in Space,” died Oct. 23 at her home in Santa Monica. She was 100.