Melissa Sue Anderson reflected on her time as Mary Ingalls on 'Little House on the Prairie' and commented on Michael Landon revealing his cancer diagnosis in 1991.

Melissa Sue Anderson and Michael Landon had an enduring friendship. ... Now married with two adult children, Anderson attended Landon’s funeral when he died of pancreatic cancer in 1991.

Melissa Sue Anderson played Laura Ingalls' sweet older sister Mary in the show. ... She said she ultimately respected Landon and got along with him until he died of pancreatic cancer in 1991.

Gilbert dishes on kissing boys on TV at just 15 years old. From left, cast members of Little House on the Prairie, Melissa Gilbert, Michael Landon, Karen Grassle, Melissa Sue Anderson and Lindsay ...

Melissa Gilbert, Michael Landon and Melissa Sue Anderson on the cover of PEOPLE's Sept. 11, 1978 issue. Landon also found ways to make her laugh, even during their slightly more awkward moments ...