Little House on the Prairie - Season 6 - Eps 3: The Family Tree
Each student must trace their family tree for a school assignment. Albert is unsure how he can do the assignment. The Ingalls decide to legally adopt Albert, but run into problems when Mr. Quinn, Albert's father shows up. He wants Albert until he sees him. Albert pretends to be blind with the hope that his father wouldn't want him. The blindness does the trick. Albert is legally adopted by the Ingalls.
About Little House on the Prairie

Title: Little House on the Prairie
First Air Date: 1974-09-11
Last Air Date: 1983-03-20
Status: Ended
Rating: 7.936/10 (from 909 votes)
Language: EN
Seasons: 10
Total Episodes: 204
Network: NBC
Genres: Western, Drama, Family
Production Companies: Worldvision Enterprises, Ed Friendly Productions, NBC, NBC Studios
Synopsis
Little House on the Prairie is an American Western drama television series, starring Michael Landon, Melissa Gilbert, and Karen Grassle, about a family living on a farm in Walnut Grove, Minnesota, in the 1870s and 1880s.
Cast

Melissa Gilbert
Laura Ingalls

Dean Butler
Almanzo James Wilder

Karen Grassle
Caroline Ingalls

Katherine MacGregor
Harriet Oleson

Melissa Sue Anderson
Mary Ingalls

Richard Bull
Nels Oleson

Victor French
Mr. Edwards

Jonathan Gilbert
Willie Oleson

Allison Balson
Nancy Oleson

Lindsay Kennedy
Jeb Carter