The real reason Mary Ingalls went blind

Photos: 'Little House on the Prairie': Where are they now?
It's been more than 40 years since the beloved TV series "Little House on the Prairie" debuted on NBC. The show ran from 1974 to 1984, and it retains a huge fan base to this day. Here's what the residents of Walnut Grove are up to today.
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Photos: 'Little House on the Prairie': Where are they now?
Melissa Gilbert, the actress who played the feisty, kindhearted Laura Ingalls from ages 9-19, still knows how to drive a stagecoach. It's a skill she mastered during the series. In recent years, Gilbert competed on "Dancing with the Stars" and authored a children's book. Gilbert, 51, married actor Timothy Busfield, and the couple resides in rural Michigan. She is currently running for a seat in Congress.
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Photos: 'Little House on the Prairie': Where are they now?
Michael Landon played the role of "Pa" with so much swagger that it's hard to believe the real Charles Ingalls actually looked like this. Born Eugene Maurice Orowitz in 1936, Landon changed his name when he became an actor. He starred in the film "I Was a Teenage Werewolf" and the TV show "Bonanza" prior to "Little House," on which he was also an executive producer, director and writer. Landon died of cancer in 1991 at age 54. Fun fact: Landon made the decision to blow up the town of Walnut Grove in the series finale because he didn't want the set recycled into a trashy movie set.
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Photos: 'Little H