Richard Lockmiller

Albert finds himself unsure of his identity when Miss Wilder assigns the students a family tree project. The trouble is, just as the Ingalls are getting ready to officially adopt him, Albert's long-estranged biological father shows up and demands custody of him.

Determined to make it through the winter season, a pair of men earn money by selling tainted meat to the Walnut Grove community. Several townspeople later become infected with anthrax, including Laura, Albert, Adam, Alice, and Nels. The victims are confined to the blind school, and with time running out to help them, Charles and Jonathan go out to retrieve some medicine.

The Jeffersons' neighbour is in the Ku Klux Klan.