The law is well settled in Oklahoma that an executor or administrator is individually liable for contracts made by him in the course of the administration of the estate unless he stipulates against personal liability. Vaughn v. Jones, 179 Okla. 545, 66 P.2d 504 (Okla. 1937); Phelps v. Exchange Bank of Commerce, 181 Okla. 145, 73 P.2d 137 (1937). As is stated in the Vaughn case:
This is not the first occasion this court has had to arrive at this conclusion. In Vaughn v. Jones, 179 Okla. 545, 66 P.2d 504, we said that a personal representative is individually liable for contracts made by him in the course of the administration. No plea or evidence of a stipulation against personal liability is involved in this action, as spoken of in that opinion.