After the Oorang Indians' collapse, Lingo continued to sell his Airedale dogs. Unfortunately, the Great Depression struck in the 1930s, prompting Lingo to scale back his business. People could no longer afford the Airedales, prompting Lingo to have approximately three hundred puppies euthanized in 1929 alone. He eventually tried to establish a business in Minneapolis, Minnesota that manufactured dog biscuits, but this venture failed to succeed. However back in LaRue, Lingo's wife, Beryl, revived the kennels. Although the operation was scaled down from its 1920's peak, the Oorang Kennel Company continued until Walter Lingo’s death in 1966.
