| 221563 | Nov 21, 1983 | Nov 21, 1983 | International Western Oil Corp. | Andrews | Fisher, Nola "A" #4 | 4,600 | 00333869 |
| 217443 | Oct 18, 1983 | Oct 18, 1983 | International Western Oil Corp. | Wilson | Nierholzer, Clifford #2 | 4,500 | 49331448 |
| 204306 | Aug 5, 1983 | Aug 5, 1983 | International Western Oil Corp. | Wilson | Hierholzer, Otto #1 | 6,500 | 49331356 |
| 196348 | May 25, 1983 | May 25, 1983 | International Western Oil Corp. | Menard | Rogers, U. E. D #7 | 4,107 | 32730533 |
| 195939 | May 23, 1983 | May 23, 1983 | International Western Oil Corp. | Wilson | Hierholzer, Alton #5 | 4,514 | 49330044 |
| 186796 | Feb 15, 1983 | Feb 15, 1983 | International Western Oil Corp. | Wilson | Hierholzer, Alton #4 | 4,500 | 49331210 |
| 186087 | Feb 14, 1983 | Feb 14, 1983 | International Western Oil Corp. | Wilson | Heirholzer, Alton #5 | 4,514 | 49330044 |
| 182023 | Dec 31, 1982 | Dec 31, 1982 | International Western Oil Corp. | Pecos | Lawrence, W. E. #2 | 5,000 | 37134111 |
| 181467 | Dec 23, 1982 | Dec 23, 1982 | International Western Oil Corp. | Wilson | Heirholzer, C. H. #2 | 4,500 | 49331206 |
| 181426 | Dec 22, 1982 | Dec 22, 1982 | International Western Oil Corp. | Wilson | Hierholzer, Alton #3 | 4,500 | 49331204 |
| 178311 | Nov 24, 1982 | Nov 24, 1982 | International Western Oil Corp. | Wilson | Hierholzer, Alton #2 | 4,500 | 49331181 |
| 176949 | Oct 25, 1982 | Oct 25, 1982 | International Western Oil Corp. | Wilson | Heirholzer, C.H. #1 | 4,500 | 49331175 |
| 175388 | Oct 25, 1982 | Oct 25, 1982 | International Western Oil Corp. | Pecos | Lawrence, W. E. #1 | 5,000 | 37134076 |
| 173800 | Oct 4, 1982 | Oct 4, 1982 | International Western Oil Corp. | Wilson | Heirholzer, Otto #3 | 4,500 | 49331159 |
| 171388 | Sep 7, 1982 | Sep 7, 1982 | International Western Oil Corp. | Caldwell | Williams, J.C. #7 | 2,600 | 05532859 |
| 171386 | Sep 7, 1982 | Sep 7, 1982 | International Western Oil Corp. | Caldwell | Williams, J.C. #3 | 2,600 | 05532858 |
| 169869 | Aug 20, 1982 | Aug 20, 1982 | International Western Oil Corp. | Stephens | O'Conner, C. J. #1A | 3,425 | 42933418 |
| 169862 | Aug 20, 1982 | Aug 20, 1982 | International Western Oil Corp. | Wilson | Hierholzer, Otto #2 | 4,200 | 49331144 |
| 168461 | Aug 5, 1982 | Aug 5, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'D' #7 | 4,107 | 32730488 |
| 168072 | Aug 3, 1982 | Aug 3, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'D' #6 | 4,500 | 32730472 |
| 166798 | Jul 22, 1982 | Jul 22, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'B' #2 | 4,400 | 32730473 |
| 164317 | Jun 22, 1982 | Jun 22, 1982 | International Western Oil Corp. | Wilson | Short, C. P. #1 | 6,500 | 49331118 |
| 164112 | Jun 18, 1982 | Jun 18, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'B' #2 | 4,400 | 32730473 |
| 164109 | Jun 18, 1982 | Jun 18, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. "D" #6 | 4,500 | 32730472 |
| 164106 | Jun 18, 1982 | Jun 18, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. "A" #2 | 4,170 | 32730471 |
| 163897 | Jun 14, 1982 | Jun 14, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'D' #3 | 4,500 | 32730470 |
| 163869 | Jun 9, 1982 | Jun 9, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'D' #5 | 4,500 | 32730469 |
| 161982 | May 27, 1982 | May 27, 1982 | International Western Oil Corp. | Goliad | Neal, J.W. #1 | 9,000 | 17531644 |
| 161653 | May 25, 1982 | May 25, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. 'D' #4 | 4,170 | 32730466 |
| 160645 | May 14, 1982 | May 14, 1982 | International Western Oil Corp. | Wilson | Heirholzer, Otto #1 | 6,500 | 49331356 |
| 157205 | Apr 19, 1982 | Apr 19, 1982 | International Western Oil Corp. | Wilson | Hierholzer, Clifford #1 | 6,500 | 49331099 |
| 156046 | Apr 8, 1982 | Apr 8, 1982 | International Western Oil Corp. | Goliad | Neal, J.W. #1 | 9,000 | 17531620 |
| 152798 | Mar 10, 1982 | Mar 10, 1982 | International Western Oil Corp. | Menard | Rogers, U. E. "E" #2 | 4,500 | 32730448 |
| 145633 | Dec 29, 1981 | Dec 29, 1981 | International Western Oil Corp. | Menard | Rogers, U. E. "B" #1 | 4,400 | 32730438 |
| 145631 | Dec 29, 1981 | Dec 29, 1981 | International Western Oil Corp. | Menard | Rogers, U. E. "D" #2 | 4,400 | 32730437 |
| 143644 | Dec 10, 1981 | Dec 10, 1981 | International Western Oil Corp. | Wilson | Heirholzer, Alton #1 | 6,900 | 49331021 |
| 140284 | Nov 12, 1981 | Nov 12, 1981 | International Western Oil Corp. | Wilson | Hierholzer, Alton #1 | 6,900 | 49331021 |
| 136951 | Oct 19, 1981 | Oct 19, 1981 | International Western Oil Corp. | Menard | Rogers, U.E. #1 | 3,795 | 32780027 |
| 143200 | Oct 2, 1981 | Oct 2, 1981 | International Western Oil Corp. | Menard | Rogers, V.E. "C" #2 | 4,400 | 32730434 |
| 133156 | Aug 25, 1981 | Aug 25, 1981 | International Western Oil Corp. | Guadalupe | Eckols, Rhea #1 | 2,900 | 18731825 |
| 123231 | Jun 30, 1981 | Jun 30, 1981 | International Western Oil Corp. | Caldwell | Denison, George #1 | 2,800 | 05532060 |
| 119574 | May 29, 1981 | May 29, 1981 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #S#2 | 2,800 | 05532023 |
| 119575 | May 22, 1981 | May 22, 1981 | International Western Oil Corp. | Wilson | Hierholzer, J.C. #1 | 6,400 | 49330910 |
| 111416 | Mar 9, 1981 | Mar 9, 1981 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #5 | 2,700 | 05531874 |
| 110962 | Mar 5, 1981 | Mar 5, 1981 | International Western Oil Corp. | Caldwell | Mooney,isaac #6 | 2,800 | 05531871 |
| 104463 | Dec 31, 1980 | Dec 31, 1980 | International Western Oil Corp. | Menard | Rogers, U.E. "A" #1 | 2,800 | 32780033 |
| 104455 | Dec 31, 1980 | Dec 31, 1980 | International Western Oil Corp. | Menard | Rogers, U.E. "D" #1 | 4,250 | 32730381 |
| 104454 | Dec 31, 1980 | Dec 31, 1980 | International Western Oil Corp. | Menard | Rogers, U.E. "C" #1 | 4,250 | 32730380 |
| 100601 | Nov 21, 1980 | Nov 21, 1980 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #1 | 2,800 | 05531663 |
| 100476 | Nov 21, 1980 | Nov 21, 1980 | International Western Oil Corp. | Caldwell | Jeffrey, Mary Lou #1 | 2,050 | 05531660 |
| 93387 | Sep 19, 1980 | Sep 19, 1980 | International Western Oil Corp. | Caldwell | Mooney, Isaac #3 | 2,750 | 05531573 |
| 93130 | Sep 18, 1980 | Sep 18, 1980 | International Western Oil Corp. | Caldwell | Garwood, R. P. #SD #2 | 2,700 | 05531562 |
| 91610 | Aug 29, 1980 | Aug 29, 1980 | International Western Oil Corp. | Caldwell | Crenshaw, L. E. #1 | 2,700 | 05531556 |
| 90214 | Aug 14, 1980 | Aug 14, 1980 | International Western Oil Corp. | Caldwell | Vann, D. M. #B-11 | 2,500 | 05531529 |
| 89498 | Aug 12, 1980 | Aug 12, 1980 | International Western Oil Corp. | Coke | Brown, Oscar Estate #1 | 5,794 | 08130935 |
| 76449 | Mar 28, 1980 | Mar 28, 1980 | International Western Oil Corp. | Caldwell | Mooney, Isaac #1 | 2,750 | 05531383 |
| 76448 | Mar 28, 1980 | Mar 28, 1980 | International Western Oil Corp. | Caldwell | Mooney, Isaac #2 | 2,750 | 05531382 |
| 76405 | Mar 27, 1980 | Mar 27, 1980 | International Western Oil Corp. | Caldwell | Svoboda, J. A. #1 | 2,900 | 05531381 |
| 76403 | Mar 27, 1980 | Mar 27, 1980 | International Western Oil Corp. | Caldwell | Svoboda, J. A. #3 | 2,900 | 05531380 |
| 76400 | Mar 27, 1980 | Mar 27, 1980 | International Western Oil Corp. | Caldwell | Svoboda, J. A. #2 | 2,900 | 05531379 |
| 75349 | Mar 17, 1980 | Mar 17, 1980 | International Western Oil Corp. | Caldwell | Walker, G. C. #1 | 2,890 | 05531362 |
| 75347 | Mar 17, 1980 | Mar 17, 1980 | International Western Oil Corp. | Caldwell | Walker, G. C. #4 | 2,900 | 05531361 |
| 73926 | Feb 29, 1980 | Feb 29, 1980 | International Western Oil Corp. | Caldwell | Vann, D. M. #B7 | 2,480 | 05531356 |
| 73925 | Feb 29, 1980 | Feb 29, 1980 | International Western Oil Corp. | Caldwell | Vann, D. M. #B8 | 2,800 | 05531355 |
| 73923 | Feb 29, 1980 | Feb 29, 1980 | International Western Oil Corp. | Caldwell | Vann, D. M. #B9 | 2,360 | 05531354 |
| 73922 | Feb 29, 1980 | Feb 29, 1980 | International Western Oil Corp. | Caldwell | Vann, D. M. #B10 | 2,800 | 05531353 |
| 72998 | Feb 20, 1980 | Feb 20, 1980 | International Western Oil Corp. | Caldwell | Garwood, R. P. #9D | 2,600 | 05531343 |
| 70247 | Jan 18, 1980 | Jan 18, 1980 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #3 | 2,700 | 05531325 |
| 70246 | Jan 18, 1980 | Jan 18, 1980 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #1 | 2,700 | 05531324 |
| 70244 | Jan 18, 1980 | Jan 18, 1980 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #4 | 2,700 | 05531323 |
| 70242 | Jan 18, 1980 | Jan 18, 1980 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #5 | 2,700 | 05531322 |
| 70241 | Jan 18, 1980 | Jan 18, 1980 | International Western Oil Corp. | Caldwell | Huff, Curtis L. #2 | 2,700 | 05531321 |
| 65685 | Dec 5, 1979 | Dec 5, 1979 | International Western Oil Corp. | Tom Green | Lewis, Gladys #1 | 6,290 | 45130556 |
| 63315 | Nov 9, 1979 | Nov 9, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #B5 | 2,500 | 05531261 |
| 63308 | Nov 9, 1979 | Nov 9, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #B6 | 2,500 | 05531260 |
| 60386 | Oct 12, 1979 | Oct 12, 1979 | International Western Oil Corp. | Coke | Arrott #1 | 5,855 | 08130826 |
| 57248 | Sep 6, 1979 | Sep 6, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #B4 | 2,500 | 05531217 |
| 57246 | Sep 6, 1979 | Sep 6, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #B3 | 2,500 | 05531216 |
| 57244 | Sep 6, 1979 | Sep 6, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #B2 | 2,420 | 05531215 |
| 42706 | Feb 16, 1979 | Feb 16, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #B-1 | 2,400 | 05531169 |
| 42704 | Feb 16, 1979 | Feb 16, 1979 | International Western Oil Corp. | Caldwell | Vann, D. M. #A-1 | 2,500 | 05531168 |
| 40737 | Jan 11, 1979 | Jan 11, 1979 | International Western Oil Corp. | Caldwell | Garwood, R. P. #8 | 2,360 | 05531160 |
| 40734 | Jan 11, 1979 | Jan 11, 1979 | International Western Oil Corp. | Caldwell | Garwood, R. P. #7 | 2,360 | 05531159 |
| 38534 | Dec 11, 1978 | Dec 11, 1978 | International Western Oil Corp. | Atascosa | Newman, W. W. #1 | 2,284 | 01330971 |
| 38315 | Dec 7, 1978 | Dec 7, 1978 | International Western Oil Corp. | Caldwell | Garwood, R. P. #6 | 2,360 | 05531155 |
| 37551 | Nov 27, 1978 | Nov 27, 1978 | International Western Oil Corp. | Caldwell | Garwood, R. P. #5 | 2,360 | 05531149 |
| 35391 | Oct 24, 1978 | Oct 24, 1978 | International Western Oil Corp. | Zavala | Flowers & Ward #1 | 945 | 50731032 |
| 34138 | Oct 5, 1978 | Oct 5, 1978 | International Western Oil Corp. | Caldwell | First Lockhart Nat'l Bank #A2 | 2,300 | 05531145 |
| 33814 | Oct 2, 1978 | Oct 2, 1978 | International Western Oil Corp. | Caldwell | Garwood, R. P. #4 | 2,900 | 05531144 |
| 33813 | Sep 29, 1978 | Sep 29, 1978 | International Western Oil Corp. | Caldwell | Garwood, R. P. #3 | 2,900 | 05531143 |
| 32752 | Sep 15, 1978 | Sep 15, 1978 | International Western Oil Corp. | Caldwell | First Lockhart Nat'l. Bank #A1 | 2,300 | 05531142 |
| 25917 | Jun 7, 1978 | Jun 7, 1978 | International Western Oil Corp. | Jackson | Gayle, George S. #I-W#2 | 6,600 | 23931293 |
| 16242 | Jan 12, 1978 | Jan 12, 1978 | International Western Oil Corp. | Brazoria | Smith, T. L. Estate #1 | 5,000 | 03931218 |