Texas - Area of significance: Exploration/Settlement
| Mary Christian Burleson House |
| Maston No. 52 (41OL235) |
| Matagorda Cemetery |
| Mathews-Powell House |
| Maverick-Altgelt Ranch and Fenstermaker-Fromme Farm |
| McAllen Ranch |
| McCroskey, John, Cabin |
| McFadin House |
| McGloin, James, Homestead |
| Menard, Michel B., House |
| Methodist Church Concord |
| Mission Creek Dam and Acequia Site |
| Mission Nuestra Senora de los Dolores de los Ais Site |
| Mission San Lorenzo de la Santa Cruz |
| Mission Socorro Archeological Site |
| Moore-Hancock Farmstead |
| Natural Bridge Caverns Sinkhole Site |
| Norway Mill |
| O'Bryne, John and Eva, House |
| Oil Springs Oil Field Discovery Well |
| Old Bayview Cemetery |
| Old Hidalgo Courthouse and Buildings |
| Oliphant House |
| Olson-Hanson Farm |
| Olson, Joseph and Anna, Farm |
| Olson-Nelson Farm |
| Onion Creek Crossing at McKinney Falls |
| Onion Creek Post Office and Stagecoach House |
| Pace McDonald Site |
| Panna Maria Historic District |
| Pape-Borchers Homestead |
| Pederson, John, Farm |
| Perez Rancho Site and Delores Crossing |
| Pierson, Ole and Ann, Farm |
| Post West Dugout |
| Pound, Dr. Joseph M. and Sarah, Farmstead |
| Presidio Nuestra Senora de Loreto de la Bahia |
| Questad, Carl and Sedsel, Farm |
| Ragsdale-Jackman-Yarbough House |
| Rancho Toluca |
| Rawlins, Capt. R. A., House |
| Reeder-Omenson Farm |
| Reierson, Hans and Berthe, House |
| Ringness, Jens and Kari, Farm |
| Robertson, Col. Elijah Sterling Clack, Plantation |
| Roesler House |
| Rogstad, Tom and Martha, Farm |
| Roma Historic District |
| Saffold Dam |
| San Elizario Historic District |
| San Jose de Palafox Historic/Archeological District |
| San Xavier Mission Complex Archeological District |
| Schultz, Tobias and Wilhelmine, Farm |
| Selma Stagecoach Stop and Post Office |
| Sharrock, Everard Jr., Farmstead |
| Shefstad, Gunarus and Ingerborg, House |
| Smith Ranch |
| Source of the River District |
| Spanish Fort Site |
| Stagecoach Inn |
| Stillman, Charles, House |
| Swale at Mission Tejas State Park |
| Tafoya, Miguel, Place(41HT17) |
| Tapalcomes |
| Terlingua Historic District |
| Tewes, Edward and Texanna, House |
| Tilson Mounds-Summerhill Lake Place (41BW14) |
| Tinaja de las Palmas Battle Site |
| Tonkawa Bank Site |
| Torrey's Trading House No. 2 Site |
| Trevino-Uribe Rancho |
| Trinity and Brazos Valley Railroad Depot and Office Building |
| Turner, Joe E., House |
| Twelve Oaks |
| Tyler House |
| Upper Settlement Rural Historic District |
| Valenzuela Ranch Headquarters |
| Varner-Hogg Plantation |
| Vineyard Manor |
| Walker, James, Log House |
| Walzem Homestead |
| Whaley House |
| White Deer Land Company Building |
| Whitehall |
| White-Pool House |
| Wilson Homesite |
| Wilson Utility Pottery Kilns Archeological District |
| Winters-Wimberley House |
| Withers, M. A., House |
| Ximenes Chapel |
| Yzaquirre-Longoria House |
Data from United States Park Service and Wikidata
