Little House on the Prairie - Season 4 - Eps 17: Be My Friend
When Laura is playing along a creek, she finds a bottle with a note in it. The note read, ""Be my friend."" Laura convinces Pa to help her look for the person who sent the note. They end up finding a baby. Charles then searches for the parents of the child. The baby belongs to teen parents. The reason the mother left the baby for the Ingalls to find was because her dad was opposed to her being with the guy she conceived the child with. The young parents take the baby and try things again.
About Little House on the Prairie

Title: Little House on the Prairie
First Air Date: 1974-09-11
Last Air Date: 1983-03-21
Status: Ended
Rating: 7.9/10 (from 923 votes)
Language: EN
Seasons: 10
Total Episodes: 200
Network: NBC
Genres: Western, Drama, Family
Production Companies: Worldvision Enterprises, Ed Friendly Productions, NBC, NBC Studios
Synopsis
When the big woods of Wisconsin becomes a difficult spot for hunting, Charles Ingalls reluctantly decides to move his family, pioneering west. Their life on the farm in Walnut Grove, Minnesota, in the 1870s and 1880s is full of adventure, tragedy, and triumph. Based on the books of Laura Ingalls Wilder.
Cast

Melissa Gilbert
Laura Ingalls

Dean Butler
Almanzo James Wilder

Katherine MacGregor
Harriet Oleson

Richard Bull
Nels Oleson

Jonathan Gilbert
Willie Oleson

Allison Balson
Nancy Oleson

Lindsay Kennedy
Jeb Carter

David Friedman
Jason Carter

Shannen Doherty
Jenny Wilder

Leslie Landon
Etta Plum