assets.... ” Letter Memorandum, at 2. While the letter does make reference to RTC’s security interest, RTC fails to make a clear demand against the estate and to show that RTC intended to hold the estate liable. Thompson, 227 F. at 983 (emphasis added). In fact, the very purpose of the letters was to assert that the debtor had no interest in the property in question and therefore the property was not property of the estate. RTC may have intended to pursue an action against the property only outside the bankruptcy case. Indeed, this could even be the reason that RTC never filed a proof of claim. Because the secured creditor has the power to proceed against the property only it is especially important that the secured creditor make a clear demand upon the estate. Thompson, 227 F. at 983 (<HOLDING>). This court holds that RTC, and therefore its
holding that because proceeds of a letter of credit were not secured by estate collateral the proceeds were not property of the estate holding single coexecutors release of mortgage debt paid to estate was valid and binding on estate because acts of any coexecutor in respect to the administration of the effects of the estate are deemed to be the acts of all as where one releases a debt or settles an account of a person with the deceased or surrenders a term or sells the goods and chattels of the estate his act binds the others characterizing conversion of decedents personal property into cash as act in due course of administration of estate holding that despite a lack of any formal notice tulsa requirement was satisfied by a showing that because the creditor was also the executor of the estate the creditor had actual notice of the pendency of the estate proceedings holding that making a demand on the estate is especially the duty of a secured creditor who has the choice  of relying upon the security and thereby giving up all or a part of his claim upon the estate holding that the duty to maintain an easement was upon those entitled to its use rather than upon the servient estate