Saturday, September 21, 10 a.m. – 2 p.m.

History is full of happy accidents, but learning about accidental history is 100 percent intentional fun! Take a spin and test your knowledge with our accidental-discoveries trivia prize wheel, concoct some homemade silly putty, design your own Lilly Pulitzer-inspired paper doll fashion, and create a themed button to add to your History Buff button collection.* Earn an admission pass when you collect four History Buff buttons!

No registration is required for this drop-in program, based on our latest special exhibition, The Accidental Historian; it’s free with paid museum admission. A Smithsonian Museum Day ticket provides free admission for two people. For tickets, visit www.smithsonianmag.com/museumday/

 *Activity supplies are available on a first-come, first-served basis.