All - Constructed - 1940–1949
| Roanoke Star |
| Rock Creek and Potomac Parkway Historic District |
| Rodale Organic Gardening Experimental Farm |
| Rosebud, The |
| Round Island Passage Light |
| Rue Chapel AME Church |
| Ruidoso Lookout Tower |
| Saban, James T., Lookout |
| Sachse Spring Snow Survey Shelter |
| Salem Diner |
| Salem Township Bridge Number E-1 |
| Salmon Mountain Lookout |
| Salvation Army Citadel |
| Sample-Lindblaum House |
| San Juan National Historic Site |
| Sayre City Park |
| Schaffer, J.W. House |
| Schonchin Butte Fire Lookout |
| Schwartz, Bernard and Fern, House |
| Sears, Roebuck and Company Department Store |
| Sebastian County Road 4G Bridge |
| Selby Apartments |
| Senate Court Apartments |
| Seventh Sister |
| Shady Lake Caretaker's House |
| Siler City City Hall |
| Sinclair, Harry F., House |
| Sioux Ordnance Depot Fire & Guard Headquarters |
| Skee's Diner |
| Smith, LeRoy, House |
| Smith, Watters, Farm on Duck Creek |
| Snow Flat Snow Survey Shelter |
| Snyder, John Wesley, House |
| Soda Springs Historic District |
| Southport Beach House |
| South Side Community Art Center |
| Southwest Virginia Museum Historical State Park |
| St. Ambrose Cathedral and Rectory |
| St. Croix Island International Historic Site |
| Stein, Frederick W., House |
| St. Joseph's Catholic Church |
| St. Louis Southwestern Railway Steam Locomotive #819 |
| Strother Field Tetrahedron Wind Indicator |
| Sugg Clinic |
| Suitland Parkway |
| Superintendent's House |
| Taborian Hospital |
| Tacoma Narrows Bridge Ruins |
| Tall Pines Motor Inn |
| Temple Beth-El |
| Tennessee State Office Building |
| Tewa Lodge |
| Thomas Jefferson Memorial |
| Topaz War Relocation Center Site |
| Town Diner |
| Triboro Hospital for Tuberculosis |
| Troy Residential Historic District |
| United Carbon Building |
| United Stated Merchant Marine Academy |
| United States Post Office Coalgate |
| Universal Life Insurance Company |
| U.S. Courthouse |
| US Courthouse-District of Columbia |
| U.S. Department of State Building |
| US Naval Air Station Dirigible Hangar B |
| US Post Office-Caldwell |
| US Post Office-Clyde |
| US Post Office-Delmar |
| US Post Office-Dolgeville |
| US Post Office-Hyde Park |
| US Post Office-Lake George |
| US Post Office-Little Valley |
| US Post Office-Los Angeles Terminal Annex |
| US Post Office-Millbury Main |
| US Post Office-Rhinebeck |
| US Post Office-Rifle Main |
| US Post Office-Truth or Consequences Main |
| US Post Office-Wappingers Falls |
| US Post Office-Weymouth Landing |
| USS NORTH CAROLINA (BB-55) National Historic Landmark |
| USS WISCONSIN (BB-64) battleship |
| Utah Parks Company Service Station |
| Van Buren County Road 2E Bridge |
| Vanderbilt Mansion National Historic Site |
| Violet Avenue School |
| Virginia Commission for the Blind |
| Virginia State Library |
| Voice of America Bethany Relay Station |
| Voorhees School |
| Wakefield Hall |
| Walker, Mrs. Clinton, House |
| Warwick School |
| Watauga Hydroelectric Project |
| Weeki Wachee Springs |
| Weeks Estate |
| Wendover Air Force Base |
| West Entrance Station |
| Wheeler, Burton and Lulu, Cabin |
| Wheeler Field |
| Wilson's Diner |
Data from United States Park Service and Wikidata
