Happy birthday to June Lockhart!
I'd like to think many of her TV characters are still alive, at least those who would have been born around the same time as she was. Of course, any characters she may have played in Westerns would be long gone, and perhaps some of her characters were killed off within the framework of their series.
But we know - as of 1989, but still! - that Ruth Martin, now with the surname of Chadwick, revisited her former adopted son Timmy in 'The New Lassie'.
And as of right now, probably still 'Lost In Space', Maureen Robinson is two years younger than I am now! And she was the ideal TV mom when I was growing up......
I sent this lovely lady birthday greetings via Facebook, and wish her all the best for a long time to come.