John D Oil Gas – Cognovit Promissory Note of John D. Oil and Gas Company, Inc. (May 27th, 2009)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC ("Maker") the principal sum of Six Hundred Thousand Dollars ($600,000.00) with interest at the rate of Eight Percent (8%) per year. Payment of Principal and accrued interest is due and payable upon DEMAND. This note replaces a $600,000 cognovit promissory note issued by Maker to John D. Oil and Gas Company on April 7, 2009, which note is hereby cancelled.

John D Oil Gas – Cognovit Promissory Note of John D. Oil and Gas Company (April 9th, 2009)For value received, the undersigned, promises to pay to the order of Great Plains Exploration, LLC ("Maker") the principal sum of six hundred thousand dollars ($600,000.00) with interest payable at the rate of 8.0% per year. Principal is payable in the amount of one hundred thousand dollars ($100,000.00) per month plus accrued but unpaid interest on the twenty-fifth date of each month beginning on May 25, 2009. This Note replaces a $600,000 cognovit promissory note issued by Maker to John D. Oil and Gas Company on February 13, 2009, which note is hereby cancelled.

John D Oil Gas – Cognovit Promissory Note of John D. Oil and Gas Company (March 6th, 2009)For value received, the undersigned, promises to pay to the order of Great Plains Exploration, LLC the principal sum of six hundred thousand dollars ($600,000.00) with interest payable at the rate of 8.0% per month. Principal is payable in the amount of one hundred thousand dollars ($100,000.00) per month plus accrued but unpaid interest on the twenty-eighth date of each month beginning on March 28, 2009.

John D Oil Gas – Cognovit Promissory Note of John D. Oil & Gas Company, Inc. (July 9th, 2008)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of Twenty Five Thousand Dollars ($25,000.00) with interest at the rate of 8% per annum. Payment of Principal and accrued interest is due and payable upon DEMAND.

John D Oil Gas – Cognovit Promissory Note of John D. Oil & Gas Company, Inc. (July 9th, 2008)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of Four Hundred Seventy Five Thousand Dollars ($475,000.00) with interest at the rate of 8% per annum. Payment of Principal and accrued interest is due and payable upon DEMAND.

John D Oil Gas – Cognovit Promissory Note of John D. Oil and Gas Company, Inc. (December 6th, 2007)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of One Hundred Twenty Thousand Dollars ($120,000.00) with interest at the rate of LIBOR plus 1.75% per annum. Payment of the principal and accrued interest is due and payable upon DEMAND.

John D Oil Gas – Cognovit Promissory Note of John D. Oil & Gas Company, Inc. (November 21st, 2007)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of Eight Hundred Thousand Dollars ($_800,000.00_) with interest at the rate of libor plus 1.75% per annum. Payment of Principal and accrued interest is due and payable upon DEMAND.

John D Oil Gas – John D. Oil & Gas Company, Inc. (September 19th, 2007)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of Five Hundred Thousand Dollars ($500,000.00) with interest at the rate of libor plus 1.75% per annum. Payment of Principal and accrued interest is due and payable upon DEMAND.

John D Oil Gas – Cognovit Promissory Note of John D. Oil & Gas Company, Inc. (September 4th, 2007)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of Five Hundred Thousand Dollars ($500,000.00) with interest at the rate of libor plus 1.75% per annum. Payment of Principal and accrued interest is due and payable upon DEMAND.

John D Oil Gas – Cognovit Promissory Note of John D. Oil & Gas Company, Inc. (August 9th, 2007)For value received, the undersigned, promises to pay to the order of GREAT PLAINS EXPLORATION, LLC the principal sum of Eight Hundred Eighty Thousand Dollars ($880,000) with interest at the rate of LIBOR plus 1.75% per annum. Payment of Principal and accrued interest is due and payable upon DEMAND.