MOORHEAD, Minn. – The man credited with popularizing the Dairy Queen Dilly Bar has died.

Robert “Bob” Litherland, 91, died Monday in his home in Moorhead, under the care of Hospice of the Red River Valley.

In 1955, two brothers from Stillwater came to the Litherland-owned Moorhead Dairy Queen with an idea. After coating the soft serve in chocolate and holding it up with a medical tongue depressor, one brother said, "Now, isn't that a dilly."