June Lockhart, the actress who had a career spanning nearly 90 years, has passed away.

Lockhart was born in 1925, the only daughter of actors Gene and Kathleen Lockhart. Gene was a prominent stage actor and Juilliard professor who played character roles in many films throughout the 1930s and '40s. Kathleen, who was born in England, had much the same career. She often played aunts and mothers, including Jimmy Stewart's mom in The Glenn Miller Story.

It didn't take long for June to follow in her parents' footsteps. She got her first acting gig at 13, right alongside mom and dad in the 1938 adaptation of A Christmas Carol, one of the oldest full-length film renditions of the classic tale. When the Ghost of Christmas Present escorts Scrooge to the Cratchits' house, we see the large, loving family preparing for a special feast. Mrs. Cratchit, played by Kathleen Lockhart, prepares the food with the help of her daughter, Belinda, played by Kathleen's real-life daughter, June.

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Soon she had her own career independent of her parents; she appeared in a string of movies including All This, and Heaven Too, Sergeant York, and Meet Me in St. Louis. She starred in the shown-on-Svengoolie film She-Wolf of London, as a woman convinced she's transforming into a beast.

Before the start of the fifth season of Lassie, Lockhart was approached to replace Cloris Leachman as mother Ruth Martin. She appeared in over 200 episodes and received an Emmy nomination in 1959 before the family was written off the show, as part of a shift to pair the titular dog with a Forest Service Ranger instead.

However, Lockhart quickly pivoted from one famous mother to another. In 1965, she joined the cast of the Irwin Allen show Lost in Space as biochemist Maureen Robinson, wife to John and mother to Judy, Penny, and Will.

Following Lost in Space's cancellation, Lockhart once again joined an ongoing series with Petticoat Junction. She was effectively a replacement for Bea Benaderet, who had passed away. Lockhart joined the cast as Dr. Janet Craig, a medical professional who rents a room at the Shady Rest Hotel. Keep in mind, in 1968, a female doctor was a rare sight on television. The first female doctor on TV was an outlier, Dr. Kate Morrow (Ann Burr) on the series City Hospital in 1952–53. It would be a decade before another recurring female doctor character came along, anesthesiologist Dr. Maggie Graham (Bettye Ackerman) on Ben Casey (1961–66). Lockhart's Dr. Craig was one of the few female medical professionals in a major television role.

Lockhart continued working well into the 2020s, even appearing in the Netflix Lost in Space series as "the Voice of Alpha Control."

In a statement from her daughter June, she said: "She cherished playing her role in Lost in Space and she was delighted to know that she inspired many future astronauts, as they would remind her on visits to NASA. That meant even more to her than the hundreds of television and movies roles she played."

The actress was 100 years old.