Montana - Role: Building
| Thibodeau Electric Shop |
| Thierwechter House |
| Thorn House |
| Thornton Hospital |
| Thornwood School |
| Three Forks of the Missouri |
| Three Valleys State Bank |
| Toole, John R., House |
| Torgrimson Place |
| Tourist Hotel |
| Trask Hall |
| Trident School |
| Trosdahl, Erick, House |
| Trowbridge Dairy |
| Troy Jail |
| Trytten, J. M., House |
| Tupper, J. S., House |
| Two Medicine Campground Camptender's Cabin |
| Two Medicine General Store |
| Unemployment Compensation Commission Building |
| Union Bethel African Methodist Episcopal Church |
| Union League of America Hall |
| United Methodist Episcopal Church |
| University Apartments |
| Upper Kintla Lake Patrol Cabin |
| Upper Logging Lake Snowshoe Cabin |
| Upper Madison School |
| Upper Nyack Snowshoe Cabin |
| Upper Park Creek Patrol Cabin |
| Urbach Cabin |
| Ursuline Academy |
| Ursuline Convent of the Sacred Heart |
| US Customs Building |
| U.S. Forest Service Remount Depot |
| U. S. Post Office |
| U.S. Post Office |
| US Post Office |
| US Post Office-Anaconda Main |
| US Post Office and Courthouse-Billings |
| US Post Office and Courthouse-Glasgow Main |
| US Post Office and Courthouse-Great Falls |
| US Post Office and Courthouse-Havre Main |
| US Post Office and Federal Building-Lewistown |
| US Post Office-Dillon Main |
| US Post Office-Livingston Main |
| US Post Office-Miles City Main |
| Valier Public School |
| Valley Masonic Lodge No. 21 |
| Vance Lodge |
| VFW Club |
| Virgelle Mercantile and Virgelle State Bank |
| Waddell, George, House |
| Waggener & Campbell Funeral Home |
| Walker House |
| Wallin, Frank, House |
| Walsh, Johnnie, Homestead |
| Walsh's, Johnnie, Guest Lodge |
| Walsh, Thomas J., Lodge |
| Wamsley, Other C., House |
| Ward Hotel |
| Warila Boarding House and Sauna |
| Washoe Theater |
| Wassweiler Hotel and Bath Houses |
| Weber's Store |
| Wellman Block |
| West Entrance Station |
| Western Life Insurance Company Helena Branch Office |
| West Fork Butte Lookout |
| Westgate Village Shopping Center |
| Whaley Homestead |
| Wheeler, Burton and Lulu, Cabin |
| Wheeler, Burton K., House |
| Wibaux, Pierre, House |
| Wick-Seiler House |
| Wiley, Clark & Greening Bank |
| Williams House |
| Williams, John and Ann, House |
| Wilma Theatre |
| Wilson House |
| Winnett Block |
| Winnett School |
| Wold Barn |
| Wolf Creek Hotel |
| Woll House |
| Wood Lawn Farm |
| Wool Warehouse |
| Wurtz Homestead |
| Yegen, Christian, House |
| Yegen, Peter, House |
| Yodeler Motel |
| Young-Almas House |
| Young, Benjamin, House |
| Young Brothers Chevrolet Garage |
| Young Women's Christian Association (Independent) |
| Yucca Theatre |
| Zion Swedish Evangelical Lutheran Church |
| Zip Auto |
Data from United States Park Service and Wikidata
