The Simpsons
The Color Yellow
Season 21, Episode 13 · Aired 2010-02-21

Synopsis
When Miss Hoover asks her students to research their family history, Lisa is horrified to discover that most of her ancestors were bad people - a motley crew of horse thieves and deadbeats. But while rummaging through the attic, Lisa happens upon a diary kept by her ancestor, Eliza Simpson. As Eliza's story unfolds, Lisa learns that her family was part of the Underground Railroad, a group that helped slaves escape to freedom. Eliza recounts liberating a slave named Virgil, but when Lisa presents her findings at school, some of her classmates refute it, leaving Lisa determined to exonerate her family's name.
In the series
This episode is part of The Simpsons (1989–present) on Fox.
Yellow family, infinite couch gags, and the longest-running joke about America itself.
Key cast
- Dan Castellaneta as Homer Simpson
- Julie Kavner as Marge Simpson
- Nancy Cartwright as Bart Simpson
- Yeardley Smith as Lisa Simpson
- Hank Azaria as Moe / Chief Wiggum
- Harry Shearer as Mr. Burns / Ned Flanders