This is not applicable to national banks.
Here is text from Jack Burkett's (counsel, IBAT) e-mail on this. I don't know that it is the answer, but it should get you on your way.
"7 TAC 11.37 is not on the Banking Department Website. However, you can go to the Finance Commission Website, www.fc.state.tx.us, and click on the agenda for the December 14 meeting of the Finance Commission and then click on Banking Department Matters. This brings up a huge PDF file. If you scroll down to page 169 of the agenda (page 108 of 117 on the PDF file), you will find the rule as adopted by the Finance Commission."
If you don't subscribe to the IBAT listserv, consider it.
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Andy Zavoina
Opinions stated are not necessarily that of my employer.