The forces that shaped banking practices in the late 1970s and which fostered attempts by the banks to rapidly expand their markets are examined. Why, and to what extent, the Texas energy banks committed themselves to the oil industry in those years, as well as the effects of the oil industry's four-and-one-half year decline on the banks' financial strength is detailed. How banks structured loans to various energy borrowers and why these borrowers lost their ability to service their debts is analyzed. The changes that the Texas banks' painfully learned lessons will bring about in energy and other specialized lending is considered.