| 524012 | Sep 25, 2002 | Sep 25, 2002 | Harrison Interests, Ltd. | Crockett | University Land 19-30 #49 | 6,800 | 10538918 |
| 520847 | Jun 13, 2002 | Jun 13, 2002 | Harrison Interests, Ltd. | Crockett | University Lands 19-33 #12 | 8,910 | 10532350 |
| 513857 | Oct 1, 2001 | Oct 1, 2001 | Harrison Interests, Ltd. | Crockett | Vada Bean G.U. 2 "C" #18 | 9,200 | 10538767 |
| 513844 | Sep 26, 2001 | Sep 26, 2001 | Harrison Interests, Ltd. | Crockett | Vada Bean G.U. 2 "C" #17 | 9,200 | 10538766 |
| 513483 | Sep 13, 2001 | Sep 13, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #68 | 9,500 | 10538761 |
| 513067 | Aug 30, 2001 | Aug 30, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #66 | 9,500 | 10538747 |
| 513066 | Aug 30, 2001 | Aug 30, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #65 | 9,500 | 10538746 |
| 511930 | Jul 30, 2001 | Jul 30, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #63 | 9,300 | 10538735 |
| 511929 | Jul 30, 2001 | Jul 30, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #62 | 9,300 | 10538734 |
| 511928 | Jul 30, 2001 | Jul 30, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #61 | 9,300 | 10538733 |
| 511766 | Jul 27, 2001 | Jul 27, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #60 | 9,300 | 10538721 |
| 510900 | Jul 5, 2001 | Jul 5, 2001 | Harrison Interests, Ltd. | Crockett | Vada Bean G.U. 2 "C" #13 | 9,300 | 10539109 |
| 510103 | Jun 14, 2001 | Jun 14, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #6 | 9,000 | 10538691 |
| 510103Amendment | Jun 14, 2001 | Jun 14, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #6 | 9,300 | 10538691 |
| 510102 | Jun 14, 2001 | Jun 14, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #7 | 9,000 | 10538690 |
| 510102Amendment | Jun 14, 2001 | Jun 14, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #7 | 9,300 | 10538690 |
| 510101 | Jun 14, 2001 | Jun 14, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #8 | 9,000 | 10538689 |
| 510101Amendment | Jun 14, 2001 | Jun 14, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #8 | 9,300 | 10538689 |
| 509723 | Jun 4, 2001 | Jun 4, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #59 | 8,950 | 10538666 |
| 509723Amendment | Jun 4, 2001 | Jun 4, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #59 | 9,301 | 10538666 |
| 508198 | Apr 30, 2001 | Apr 30, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #58 | 10,500 | 10538648 |
| 507727 | Apr 13, 2001 | Apr 13, 2001 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #57 | 10,500 | 10538639 |
| 507559 | Apr 13, 2001 | Apr 13, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #4 | 10,500 | 10538630 |
| 507558 | Apr 11, 2001 | Apr 11, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #5 | 10,500 | 10538629 |
| 507410 | Apr 5, 2001 | Apr 5, 2001 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "C" #32A | 9,400 | 10538620 |
| 502637Amendment | Apr 5, 2001 | Apr 5, 2001 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "C" #32 | 9,800 | 10538495 |
| 506655 | Mar 26, 2001 | Mar 26, 2001 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #3 | 10,100 | 10538598 |
| 503732 | Jan 5, 2001 | Jan 5, 2001 | Harrison Interests, Ltd. | Crockett | Vada Bean G. U. 2 "C" #12A | 9,000 | 10538515 |
| 503219 | Dec 21, 2000 | Dec 21, 2000 | Harrison Interests, Ltd. | Crockett | Thomason, W. A. #4 | 10,000 | 10538503 |
| 503039 | Dec 15, 2000 | Dec 15, 2000 | Harrison Interests, Ltd. | Crockett | Vada Bean G. U. 2 "C" #12 | 9,000 | 10538501 |
| 502718 | Dec 11, 2000 | Dec 11, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "C" #35 | 9,800 | 10538496 |
| 502718Amendment | Dec 11, 2000 | Dec 11, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "C" #35 | 9,400 | 10538496 |
| 502637 | Dec 7, 2000 | Dec 7, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "C" #32 | 9,400 | 10538495 |
| 501465 | Dec 6, 2000 | Dec 6, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "A" #28 | 9,800 | 10538478 |
| 502113 | Nov 22, 2000 | Nov 22, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #56 | 8,950 | 10538489 |
| 502113Amendment | Nov 22, 2000 | Nov 22, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "A" #56 | 9,100 | 10538489 |
| 501642 | Nov 10, 2000 | Nov 10, 2000 | Harrison Interests, Ltd. | Crockett | Robertson, W. B. Jr. #2 | 9,000 | 10538481 |
| 501053 | Oct 27, 2000 | Oct 27, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom, Jr. "A" #31 | 9,400 | 10538462 |
| 501119 | Oct 26, 2000 | Oct 26, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "I" #52 | 8,950 | 10538463 |
| 500959 | Oct 20, 2000 | Oct 20, 2000 | Harrison Interests, Ltd. | Crockett | Johnson, Morman Dudley #6 | 10,000 | 10538460 |
| 500959Amendment | Oct 20, 2000 | Oct 20, 2000 | Harrison Interests, Ltd. | Crockett | Johnson, Norman Dudley #6 | 10,000 | 10538460 |
| 500275 | Oct 4, 2000 | Oct 4, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W., III, "I" #53 | 8,900 | 10538452 |
| 500275Amendment | Oct 4, 2000 | Oct 4, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W., III "I" #53 | 9,100 | 10538452 |
| 500272 | Oct 4, 2000 | Oct 4, 2000 | Harrison Interests, Ltd. | Crockett | Robertson, W. B., Jr. #1 | 8,900 | 10538451 |
| 498857 | Aug 25, 2000 | Aug 25, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "K" #55 | 10,000 | 10538420 |
| 498857Amendment | Aug 25, 2000 | Aug 25, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "K" #55 | 10,000 | 10538420 |
| 498856 | Aug 25, 2000 | Aug 25, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "K" #54 | 9,650 | 10538419 |
| 498855 | Aug 25, 2000 | Aug 25, 2000 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "N" #51 | 8,900 | 10538421 |
| 497355 | Jul 19, 2000 | Jul 19, 2000 | Harrison Interests, Ltd. | Crockett | Thomason, W. A. #3 | 7,000 | 10531705 |
| 497167 | Jul 13, 2000 | Jul 13, 2000 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #6 | 7,000 | 10533547 |
| 497166 | Jul 13, 2000 | Jul 13, 2000 | Harrison Interests, Ltd. | Crockett | Johnson, Norman Dudley #3 | 7,000 | 10531630 |
| 497165 | Jul 13, 2000 | Jul 13, 2000 | Harrison Interests, Ltd. | Crockett | Johnson, Norman Dudley #5 | 7,000 | 10531967 |
| 496014 | Jun 9, 2000 | Jun 9, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, C.E. III #5 | 7,000 | 10537366 |
| 496013 | Jun 9, 2000 | Jun 9, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, C.E. #4 | 7,000 | 10536789 |
| 496012 | Jun 9, 2000 | Jun 9, 2000 | Harrison Interests, Ltd. | Crockett | Davidson, C. E. III #3 | 7,000 | 10536790 |
| 475740 | Apr 30, 1998 | Apr 30, 1998 | Harrison Interests, Ltd. | Crockett | Bean, Vada "A" #10 | 9,000 | 10538130 |
| 475740Amendment | Apr 30, 1998 | Apr 30, 1998 | Harrison Interests, Ltd. | Crockett | Bean, Vada "A" #10 | 10,000 | 10538130 |
| 475490 | Apr 24, 1998 | Apr 24, 1998 | Harrison Interests, Ltd. | Crockett | Bean, Vada "A" #11 | 9,000 | 10538127 |
| 475411 | Apr 23, 1998 | Apr 23, 1998 | Harrison Interests, Ltd. | Brazoria | Wisdom, Belle Estate #70 | 5,400 | 03932642 |
| 475410 | Apr 23, 1998 | Apr 23, 1998 | Harrison Interests, Ltd. | Fort Bend | Wisdom, Belle Estate #71 | 4,500 | 15732012 |
| 472726 | Jan 30, 1998 | Jan 30, 1998 | Harrison Interests, Ltd. | Crockett | Bean, Vada "B" #9 | 10,150 | 10538013 |
| 472380 | Jan 28, 1998 | Jan 28, 1998 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "N" #48 | 8,750 | 10538010 |
| 472377 | Jan 28, 1998 | Jan 28, 1998 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "N" #50 | 8,750 | 10538008 |
| 472378 | Jan 26, 1998 | Jan 26, 1998 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "N" #49 | 8,750 | 10538009 |
| 467335 | Oct 7, 1997 | Oct 7, 1997 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie #3 | 9,475 | 10531575 |
| 467334 | Sep 15, 1997 | Sep 15, 1997 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie #4 | 9,700 | 10531712 |
| 464353 | Jul 1, 1997 | Jul 1, 1997 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #7 | 9,400 | 10537322 |
| 464041 | Jun 24, 1997 | Jun 24, 1997 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "F" #27 | 9,300 | 10537744 |
| 464040 | Jun 24, 1997 | Jun 24, 1997 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "D" #24 | 9,450 | 10537743 |
| 464039 | Jun 24, 1997 | Jun 24, 1997 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "E" #25 | 9,300 | 10537742 |
| 464038 | Jun 24, 1997 | Jun 24, 1997 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "C" #26 | 9,300 | 10537741 |
| 464037 | Jun 24, 1997 | Jun 24, 1997 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "E" #23 | 9,250 | 10537740 |
| 460279 | Apr 2, 1997 | Apr 2, 1997 | Harrison Interests, Ltd. | Crockett | McMullen, Joe Wylie #10 | 9,400 | 10537626 |
| 460279Amendment | Apr 2, 1997 | Apr 2, 1997 | Harrison Interests, Ltd. | Crockett | McMullen, Joe Wylie #10 | 9,400 | 10537626 |
| 460278 | Mar 26, 1997 | Mar 26, 1997 | Harrison Interests, Ltd. | Crockett | McMullen, Joe Wylie #9 | 9,400 | 10537625 |
| 460132 | Mar 25, 1997 | Mar 25, 1997 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #8 | 9,500 | 10537342 |
| 455187 | Nov 18, 1996 | Nov 18, 1996 | Harrison Interests, Ltd. | Crockett | University 18-33 Gas Unit North #45 | 6,850 | 10537461 |
| 454927 | Nov 14, 1996 | Nov 14, 1996 | Harrison Interests, Ltd. | Crockett | University Land 31-30 #48 | 6,850 | 10537447 |
| 454379 | Oct 28, 1996 | Oct 28, 1996 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "D" #21 | 9,300 | 10537438 |
| 454129 | Oct 22, 1996 | Oct 22, 1996 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "E" #20 | 9,250 | 10537436 |
| 453457 | Oct 8, 1996 | Oct 8, 1996 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "D" #19 | 9,250 | 10537421 |
| 453054 | Sep 26, 1996 | Sep 26, 1996 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "G" #17 | 9,250 | 10537406 |
| 450616 | Aug 6, 1996 | Aug 6, 1996 | Harrison Interests, Ltd. | Crockett | Davidson, C. E. III #5 | 8,100 | 10537366 |
| 449138 | Jul 9, 1996 | Jul 9, 1996 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #8 | 9,500 | 10537342 |
| 449138Amendment | Jul 9, 1996 | Jul 9, 1996 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #8 | 9,500 | 10537342 |
| 449905 | Jul 5, 1996 | Jul 5, 1996 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "N" #45 | 8,950 | 10537332 |
| 449904 | Jul 5, 1996 | Jul 5, 1996 | Harrison Interests, Ltd. | Crockett | Henderson, John W. III "N" #44 | 8,900 | 10537333 |
| 449755 | Jul 3, 1996 | Jul 3, 1996 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. "B" #22 | 9,450 | 10537331 |
| 449137 | Jun 13, 1996 | Jun 13, 1996 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #7 | 9,500 | 10537322 |
| 449137Amendment | Jun 13, 1996 | Jun 13, 1996 | Harrison Interests, Ltd. | Crockett | McMullan, Joe Wylie "A" #7 | 9,500 | 10537322 |
| 449156 | Jun 12, 1996 | Jun 12, 1996 | Harrison Interests, Ltd. | Fort Bend | Harrison Ranch, Fulshear #1 | 16,500 | 15731765 |
| 441537 | Nov 14, 1995 | Nov 14, 1995 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. #7 | 9,810 | 10531539 |
| 441303 | Oct 26, 1995 | Oct 26, 1995 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. #18 | 9,300 | 10537075 |
| 440320 | Sep 29, 1995 | Sep 29, 1995 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. #17 | 9,300 | 10537060 |
| 439962 | Sep 21, 1995 | Sep 21, 1995 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. #16 | 9,300 | 10537046 |
| 439961 | Sep 21, 1995 | Sep 21, 1995 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. #15 | 9,400 | 10537047 |
| 439952 | Sep 20, 1995 | Sep 20, 1995 | Harrison Interests, Ltd. | Crockett | Davidson, Joe Tom Jr. #14 | 9,300 | 10537044 |
| 439849 | Sep 13, 1995 | Sep 13, 1995 | Harrison Interests, Ltd. | Crockett | University Land 30-30A #46 | 7,000 | 10537041 |
| 439848 | Sep 13, 1995 | Sep 13, 1995 | Harrison Interests, Ltd. | Crockett | University 20-30A #47 | 7,000 | 10537042 |
| 439295 | Aug 24, 1995 | Aug 24, 1995 | Harrison Interests, Ltd. | Crockett | University Land 30-30 #44 | 6,700 | 10537030 |