Tiffany Haddish, Evan Rachel Wood, Busy Philipps and Mandy Moore pay tribute to the first woman to fight in the Revolutionary War and receive a pension, a museum curator who saved art from the Nazis and Civil War hero Clara Barton.

Questlove, Method Man, Raven-Symone and more celebrate the early history of hip hop, the man known for inventing Motown, Berry Gordy, and "Star Trek" actress Nichelle Nichols's incredible activism on and off the TV screen.