When Phineas and Ferb discover a commemorative coin from the 1903 Danville World’s Fair, Lawrence recounts the events of the festival to them, in which steam-driven devices were introduced and a set of kids, who were very much like them, were preparing for the highly anticipated event.
| Creator | Dan Povenmire |
|---|---|
| Actor | Vincent Martella, David Errigo Jr., Ashley French |
| Country | United States of America |
| Production | Disney Television Animation |