Little House on the Prairie - Season 2 Episode 9 -

In spite of a rocky start and over Charles' strong objections, the Olesons accompany the Ingalls on a family camping trip and, surprisingly, the oft-feuding families begin to enjoy each other's company. But will the warming relationship between them survive a cold plunge into a rushing river and Willie's rash decision to add a special leaf to his collection...the one that Mary won't touch?