King's Department Stores was a chain of discount stores in the Eastern United States. The chain started in 1956, in Brockton, Massachusetts. They expanded to about 190 stores when, in 1978, they purchased the bankrupt Mammoth Mart chain. Three stores operated in the Buffalo, New York area. Because of the Mammoth purchase, they filed for Chapter 11 bankruptcy in 1982, and in 1984 Ames Department Stores purchased the chain and converted most of them into Ames stores.