| 501 | SCHULZE-SCOTT | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 502 | SCHWOPE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 503 | SCHWOPE NORTH LAS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 504 | SCHWOPE SOUTH LAS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 505 | SCOTT-WILKINSON | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 506 | SEAL LEHMAN | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 507 | SEAL-PERRIGO ALLOC. A | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 508 | SEAL-SOTO ALLOCATION | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 509 | SHAW-KLATTENHOFF | La Salle County, TX | Oil & Gas Property | May 2022 |
| 510 | SHENKIR | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 511 | SHINER | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 512 | SHINING STAR RANCH | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 513 | SHOFNER UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 514 | SHORT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 515 | SILVERBRITE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 516 | SJM UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 517 | SKIPJACK | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 518 | SLYTHERIN | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 519 | SMART UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 520 | SMITH A UNIT A | La Salle County, TX | Oil & Gas Property | Dec 2016 |
| 521 | SMITH B UNIT B | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 522 | SNJ STEAMBOAT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 523 | SNOW UNIT | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 524 | SNOWBIRD | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 525 | SNOWDEN | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 526 | SO. TEX. SYNDICATE LEASE | La Salle County, TX | Oil & Gas Property | Nov 2019 |
| 527 | SO. TEXAS SYNDICATE #39 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 528 | SOCKEYE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 529 | SOCKEYE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 530 | SOIXANTE QUINZE | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 531 | SOLITUDE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 532 | SOUTH TEXAS S | La Salle County, TX | Oil & Gas Property | Sep 2013 |
| 533 | SPRINGER | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 534 | SPRINGER - SSS O UNIT 1H | La Salle County, TX | Gas Property | Apr 2025 |
| 535 | SR BREGMAN 2H | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 536 | ST. LOUIS UNION TRUST CO | La Salle County, TX | Oil & Gas Property | Aug 2009 |
| 537 | STAR FIRE RANCH | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 538 | STEELHEAD | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 539 | STEPHENSON | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 540 | STOCKTON | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 541 | STOREY | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 542 | STOREY | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 543 | STOREY-PEEBLES UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 544 | STS 1 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 545 | STS 1 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 546 | STS 2 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 547 | STS 2 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 548 | STS 3 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 549 | STS 4 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 550 | STS 5 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 551 | STS 6 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 552 | STS 7 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 553 | STS A | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 554 | STS A 2 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 555 | STS A STATE UNIT 20H | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 556 | STS B | La Salle County, TX | Oil & Gas Property | Aug 2019 |
| 557 | STS B | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 558 | STS F-BPX B (SA) F | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 559 | SUMBERA | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 560 | SUZANNE UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 561 | T KIRK UNIT B LAS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 562 | TAHOE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 563 | TALBUTT | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 564 | TALBUTT NORTH RME | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 565 | TALBUTT WEST RME | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 566 | TALISMAN ENERGY USA INC. 1 | La Salle County, TX | Oil & Gas Property | Feb 2012 |
| 567 | TEAK | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 568 | TELLURIDE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 569 | THIEL MARTIN | La Salle County, TX | Oil & Gas Property | Jan 2025 |
| 570 | THORNTON | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 571 | THURMAN | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 572 | THURMAN NORTH LAS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 573 | TILLY | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 574 | TOM HANKS | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 575 | TOWNSEND | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 576 | TREVINO UNIT I LAS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 577 | TRIBAR D. W. 56 C | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 578 | TRIBAR-SCHOOLFIELD | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 579 | TRIGO UNIT A LAS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 580 | TRIPLE BAR | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 581 | TT RANCH UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 582 | TURMAN | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 583 | VAIL | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 584 | VAN CLEVE UNIT | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 585 | VENADO | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 586 | VENADO BROS | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 587 | VESPER DIM | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 588 | VESTER | La Salle County, TX | Oil & Gas Property | Mar 2025 |
| 589 | VT ALDERMAN EZRA | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 590 | VT BECKMAN M.A | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 591 | VT BURKHOLDER | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 592 | VT COLEMAN HEIRS | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 593 | VT FANSLER LORRAINE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 594 | VT FLORES/FOUKE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 595 | VT GUTIERREZ R | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 596 | VT KILLAM & GONZALEZ 299 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 597 | VT KRAUSE | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 598 | VT NYE RANCH | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 599 | VT PGE MINERAL PROP. LTD 298 | La Salle County, TX | Oil & Gas Property | Apr 2025 |
| 600 | VT RMG LAND 220 | La Salle County, TX | Oil & Gas Property | Apr 2025 |