Submitted by scribe9999 on Wed, 01/30/2008 - 2:04pm.
If my research is accurate, Mid-Continent Oil later merged with Sunray Oil Co., which itself merged with Sun Oil, now known as Sunoco. The Tulsa refinery is still operational according to the Wikipedia article on Sunoco.
Trivia: Sunray operated the DX chain of gas stations. In S.E. Hinton's novel The Outsiders, Sodapop Curtis worked at a DX station in Tulsa.
