- Only actress who starred in Petticoat Junction (1963) for the duration of its seven-year run.
- Her first husband, Mike Minor, developed a crush on her when he first played a small guest part in the second season of Petticoat Junction (1963). She did not know him, however, because they didn't share any scenes together. Once he was a regular on the series, plans were to have his character and the character of older sister Billie Jo fall in love and get married. However, when Mike and Linda fell in love on the set, the producers decided to go with it and fit it into the show instead of the original idea.
- She played the same character (Betty Jo Elliott) on three different series: The Beverly Hillbillies (1962), Petticoat Junction (1963) and Green Acres (1965).
- Dubbed in the voice of Jethrine on The Beverly Hillbillies (1962).
- Because her father Paul Henning, who shares her birth date, was afraid of being accused of nepotism, he was not involved in her casting as Betty Jo Bradley on Petticoat Junction (1963). Once she was cast, she dropped her last name at the request of her father and used her middle name of Kay instead. He wryly suggested she add an "e" to make it "Kaye" so people might think she was the daughter of fellow redheaded comedian Danny Kaye.
- Daughter of producer Paul Henning and Ruth Henning.
- Along with Cleavant Derricks, she is one of only two actors to appear in both the pilot and finale of Sliders (1995): Pilot (1995) and The Seer (2000).
- Appears frequently at TV nostalgia conventions with her former TV sisters Lori Saunders and Gunilla Hutton.
- Took classes at UCLA for years with her TV sister Meredith MacRae.
- Because of her being credited as "Linda Kaye" early in her career, in the 1990s some reference books and online guides mixed up and combined her credits with those of another Linda Kaye.
- Once worked as a docent at the Los Angeles Zoo.
- Like her character of Betty Jo, Linda was a tomboy growing up. She liked animals and climbing trees.
- Her mother enrolled her in the children's theater group, The Peter Pan Players, to help her overcome her extreme shyness, and she performed in a number of fairy tale pieces such as "Cinderella", "Pinocchio" and "Snow White". It worked and she stayed with it into her teen years. Bea Benaderet saw her in one of their productions and told Paul Henning, the Petticoat Junction (1963) creator, that she would be ideal for the role of one of the daughters on their upcoming TV series. She auditioned and got the part of youngest sister Betty Jo Bradley.
- Enjoyed science very much while young, particularly physiology. Later married a man who had a masters in physiology and was a research scientist for several years.
- Appeared in a number of musical theatre plays including "Brigadoon," "Carousel" (with John Raitt), "Best Foot Forward," "Applause," "The Pajama Game," "I Do! I Do!" and "Damn Yankees." Legitimate plays include "Born Yesterday" and "Mary, Mary.".
- Belonged to the California Artists Radio Theatre, which was set up at the Hollywood Roosevelt Hotel.
- Profiled in the 2016 book "X Child Stars: Where Are They Now?" by Kathy Garver and Fred Ascher.
- Ex-sister-in-law of Gregg Fedderson.
- Ex-stepdaughter-in-law of Yvonne Lime.
- Was born on her father's 33rd birthday.
- Ex-daughter-in-law of Don Fedderson and Tido Fedderson.
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