Linda Purl was 13 in The Walking Major when she played the character 'Rose Allen'.
That was over 54 years ago in 1970.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 68, and has starred in 52 movies in total, 52 of those since The Walking Major was released.
In The Walking Major, I think Linda Purl looks: