Commercial building

Swiss Inn (Laclede County, Missouri)
Sycamore Inn (San Bernardino County, California)
Sylvan Building (Richland County, South Carolina)
Symington House (Essex County, New Jersey)
Syracuse Savings Bank (Onondaga County, New York)
T. J. Buckley's Uptown Dining (Windham County, Vermont)
An unusually tiny diner
T. Lanning & Co. Department Store (Tuscarawas County, Ohio)
T.E. Williams Block (St. Croix County, Wisconsin)
Limestone-faced Italianate commercial block
T.S. Martin and Company (Woodbury County, Iowa)
Tackett Underwood Building (Gregory County, South Dakota)
Tacoma Building (San Juan County, Washington)
Taft Brothers Block (Worcester County, Massachusetts)
Taft Building (San Juan County, New Mexico)
Taft--West Warehouse (Polk County, Iowa)
Taichert Building (San Miguel County, New Mexico)
Tally's Bank (Caddo Parish, Louisiana)
Tampico Restaurant (Salt Lake County, Utah)
Tanner's Hospital (St. Louis County, Minnesota)
Tarlton Building (Hill County, Texas)
Tavener-Sears Tavern (Muskingum County, Ohio)
Tayler--Phipps Building (Jackson County, Oregon)
Taylor Building (Pulaski County, Arkansas)
Taylor Carpet Company Building (Marion County, Indiana)
Taylor National Bank (Williamson County, Texas)
Taylor--Olive Building (St. Louis, Missouri)
Teachout Building (Polk County, Iowa)
Teasdale Tithing Granary (Wayne County, Utah)
Tecumseh Building (Clark County, Ohio)
Ted Smallwood Store (Collier County, Florida)
Ted's Diner (Worcester County, Massachusetts)
Was the oldest diner in the country made by The Tierney Diner Co.
Teddy's Tavern (Sussex County, Delaware)
Teeland's Country Store (Matanuska-Susitna Borough, Alaska)
Telephone Building (Denver County, Colorado)
Telephone Exchange Building (New London County, Connecticut)
Telephone Exchange Building (Lawrence County, Arkansas)
Templar-Farrell Motor Sales Building (Cuyahoga County, Ohio)
Temple Block Building (Jackson County, Missouri)
Temple Building (Middlesex County, Massachusetts)
Ten Hagen Cottage-Stegman Store (Marion County, Iowa)
Ten Sleep Mercantile (Washakie County, Wyoming)
Tennessee Club-Overall Goodbar Building (Shelby County, Tennessee)
Tennessee Trust Building (Shelby County, Tennessee)
Tennille Banking Company Building (Washington County, Georgia)
Terminal Building (Montgomery County, Kansas)
Terminal Sales Building (Multnomah County, Oregon)
Terminal Warehouse (Baltimore, Maryland)
Terra Alta Bank (Preston County, West Virginia)
Terra Cotta Building (Allegany County, New York)
Terrell Times Star Building (Kaufman County, Texas)
Territorial Commercial District (Mayes County, Oklahoma)
Terry Block Building (Benton County, Arkansas)
Terry Hutchens Building (Madison County, Alabama)
Huntsville's first "skyscraper"
Test Building (Marion County, Indiana)
The city's first parking garage and one of the earliest in Indiana
Tester and Polin General Merchandise Store (Buffalo County, Wisconsin)
Tevis Block (Kern County, California)
Texaco Building (Orleans Parish, Louisiana)
Texaco Station No. 1 (Greene County, Arkansas)
Texas Building (Galveston County, Texas)
Texas Company Building (Harris County, Texas)
Texas Company Filling Station (Victoria County, Texas)
Texas Oil Company (Laramie County, Wyoming)
Textile Mill Supply Company Building (Mecklenburg County, North Carolina)
Thacher Building (Shawnee County, Kansas)
The Blue Benn Diner (Bennington County, Vermont)
The Copper Cart (Yavapai County, Arizona)
The Corner Packing Shed (Beaufort County, South Carolina)
The Corner Store and Office (Beaufort County, South Carolina)
The Diner (Taos County, New Mexico)
The Elverson Building (Philadelphia County, Pennsylvania)
The Hat Pastrami (Los Angeles County, California)
The Little Chef Restaurant (Roanoke, Virginia)
The Natatorium (Potter County, Texas)
The Plainsman (Navajo County, Arizona)
The Star (Ketchikan Gateway Borough, Alaska)
Theo Berryhill / Stonewall Building (Creek County, Oklahoma)
Theresa Building (Franklin County, Ohio)
Thibodeau Electric Shop (Flathead County, Montana)
Thiesen Building (Escambia County, Florida)
Third National Bank (Onondaga County, New York)
Third National Bank (Erie County, Ohio)
Third National Bank (Barren County, Kentucky)
Third National Bank Building (Gaston County, North Carolina)
Thom Block (Worcester County, Massachusetts)
Thomas B. Finley Law Office (Wilkes County, North Carolina)
Thomas Drugs (Robertson County, Tennessee)
Thomas James Store, Old (Mathews County, Virginia)
Thompson Block (Cumberland County, Maine)
Thompson Station Bank (Williamson County, Tennessee)
Thompson Store (Williamson County, Tennessee)
Thompson's Block (Dane County, Wisconsin)
Thompson--Roach Building (Lane County, Oregon)
Thorton Building (Fulton County, Georgia)
Thos. Corrigan Building (Jackson County, Missouri)
Threatt Filling Station (Oklahoma County, Oklahoma)
Three Valleys State Bank (Gallatin County, Montana)
Thurston Building (Wood County, Ohio)
Ticonderoga National Bank (Essex County, New York)
Tidball Store (Monterey County, California)
Tiffany and Company Building (New York County, New York)
Tiger Building (Okmulgee County, Oklahoma)
Tightwad Bank (Henry County, Missouri)
An regular bank with an unusual name
Tillman County Bank of Grandfield (Tillman County, Oklahoma)
Times and Olympia Buildings (Bristol County, Massachusetts)
Times Building (Madison County, Alabama)
One of the oldest and tallest buildings in Huntsville
Times-Star Building (Hamilton County, Ohio)
Timmerman--Burd Building (Henry County, Iowa)
Tina's Diner (Hartford County, Connecticut)
Large, space-age style diner, heavily remodeled.
Tinker Building (Orange County, Florida)
Tinkham Veale Building (Shawnee County, Kansas)
Tioga Centre General Store (Tioga County, New York)
Tioga Inn (Neosho County, Kansas)
Tip-Top House (Coos County, New Hampshire)
Tipton State Bank (Cedar County, Iowa)
Title and Trust Building (Maricopa County, Arizona)
Title Guarantee and Trust Company Building (Los Angeles County, California)
Tomahawk Bar (McKinley County, New Mexico)
Tomkins-Swartz Mill (Floyd County, Indiana)
One of a few commercial buildings left in Galena, Indiana
Tonapah Liquor Company Building (Nye County, Nevada)
Tonieville Store (Larue County, Kentucky)
Toole Building (Sabine County, Texas)
Torrey Pines Lodge (San Diego County, California)
Torrey--Larrabee Store (Ocean County, New Jersey)
Totem Pole Trading Post (Phelps County, Missouri)
Tower Building (St. Joseph County, Indiana)
Tower Building (Washington, District of Columbia)
Tower Station (Wheeler County, Texas)
Town Clock Building (Dubuque County, Iowa)
Town Diner (Middlesex County, Massachusetts)
Townsend Building (Union County, Florida)
Tracy Loan and Trust Company Building (Salt Lake County, Utah)
Tracy--Causer Block (Cumberland County, Maine)
Tradesman's National Bank Building (Oklahoma County, Oklahoma)
Tramway Building (Denver County, Colorado)
Travelers Home (Yamhill County, Oregon)
Treat Commercial Building (Searcy County, Arkansas)
Trees City Office and Bank Building (Caddo Parish, Louisiana)
Treme Market (Orleans Parish, Louisiana)
Trew General Merchandise Store (McMinn County, Tennessee)
Tri State Bakery (Butte County, South Dakota)
Tri-County Truck Stop (Franklin County, Missouri)
Tri-State Bank (Shelby County, Tennessee)
Tri-State Land Company Headquarters Building (Scotts Bluff County, Nebraska)
Triangle Building (Muscogee County, Georgia)
Triangle Diner (Winchester, Virginia)
Triangle Inn (Sarasota County, Florida)
Tribune Building (Tulsa County, Oklahoma)
Tribune Building (Natrona County, Wyoming)
Trigg--Smartt Building (Hamilton County, Tennessee)
Trinity Block (Hampden County, Massachusetts)
Triplett Company Building (Lafayette County, Arkansas)
Tripp House and Store Complex (Greene County, New York)
Trolley Pub On Main (Windham County, Connecticut)
Trotter's Warehouse (Fayette County, Kentucky)
Troy Laundry (Santa Clara County, California)
Troy Laundry Building (Multnomah County, Oregon)
Trueheart-Adriance Building (Galveston County, Texas)
Trustees System Service Building (Cook County, Illinois)
Tuba Trading Post (Coconino County, Arizona)
Tubbs Cordage Company Office Building (San Francisco County, California)
Tucker Carriage House (Wake County, North Carolina)
Tugboat Annie's (Los Angeles County, California)
Tulane Building (Montgomery County, Alabama)
Tulsa Club Building (Tulsa County, Oklahoma)
Tulsa Monument Company (Tulsa County, Oklahoma)
Tupper and Reed Building (Alameda County, California)
Turn Store and the Tinsmith's Shop (Pike County, Pennsylvania)
Turner Building (Creek County, Oklahoma)
Turner-Todd Motor Company (Mobile County, Alabama)
Turpin Grain Elevator (Beaver County, Oklahoma)
Tuton's Drugstore (Oklahoma County, Oklahoma)
Tutt Building (Pueblo County, Colorado)
TWA Administrative Offices Building (Platte County, Missouri)
A four-story building, executed in the Modern Movement Miesian style
TWA Corporate Headquarters' Building (Jackson County, Missouri)
Twelve Mile House (Hamilton County, Ohio)
Twin Arrows (Coconino County, Arizona)
Twin Falls Canal Company Building (Twin Falls County, Idaho)
Twin Peaks Sports (Custer County, Idaho)
Twining Laboratories (Fresno County, California)
Two Medicine General Store (Flathead County, Montana)
Twohy Building (Santa Clara County, California)
Tyree Stone Tavern (Fayette County, West Virginia)
U. L. Hickmon Hardware Store (White County, Arkansas)