The gang visits the Smithsonian Institution, where they discuss three former United States presidents.
The gang talk about Theodore Roosevelt and his conservation movement, which includes Roosevelt going on a trip with John Muir to the Yosemite Valley.
Franklin Delano Roosevelt
The gang discuss Franklin Delano Roosevelt's early presidency, which took place during the troubling days of the Great Depression.
- Erin Chase – Charlie Brown
- Brittany Thornton – Sally Brown
- Erica Gayle – Lucy van Pelt
- Brandon Stewart – Linus van Pelt
- Hakeem Abdul-Samad – Franklin
- Jason Mendelson – Peppermint Patty
- Marie Cole – Marcie
- Bill Melendez – Snoopy/Woodstock
- Frank Welker – Abraham Lincoln/Theodore Roosevelt
- Hal Smith – John Muir
- Franklin Roosevelt was the only president who did not appear in the animated portions of this episode.
- Among the items that appear in this episode include the Apollo 10 Commander Module (Snoopy) and Lunar Module (Charlie Brown), the Sunday strip from October 4, 1964, the Wright Brothers plane from "The Wright Brothers at Kitty Hawk" and the Duryea Brothers' "horseless carriage" from "The Great Inventors."