Founded in 1927 in Dallas, Texas, by Henry and Alabama Marshall, the Bama Pie Shop originally served a small clientele but gradually had customers in other Texas communities. The Marshalls' son Paul established a branch in Tulsa, Oklahoma, in 1937 that became the company's headquarters. Link
This 2012 Youtube video details more of the history of Bama Pie in Tulsa and also talks to some current employees about their experiences. Seems like a great place to work!