Cardwell-Holman House (Multnomah County, Oregon)
Cardwellton (Mercer County, Kentucky)
Cargill House (Livingston County, New York)
Cargill, Walter Hurt (Muscogee County, Georgia)
Carl and Esther Lee House (Van Buren County, Arkansas)
Carl Ben Eielson House (Traill County, North Dakota)
Carl C. Jantzen Estate (Clackamas County, Oregon)
Carl Friedrick Gartner Homestead (Butte County, South Dakota)
Carl G. Adams House (Miami-Dade County, Florida)
Carl G. Johnson House (Summit County, Utah)
Carl Gottlieb Heins House (Manitowoc County, Wisconsin)
One-and-a-half story Colonial Revival residence in downtown Kiel
Carl H. Duhrsen House (Honolulu County, Hawaii)
Carl H. Shier House (Franklin County, Ohio)
Carl Herget Mansion (Tazewell County, Illinois)
Carl Hilmar Guenther House (Bexar County, Texas)
Carl House (Benton County, Arkansas)
Carl Koch Block (Winnebago County, Wisconsin)
Commercial building next to the Tayco Street bascule bridge
Carl M. Neuhausen House (Salt Lake County, Utah)
Carl W.A. Groos House (Comal County, Texas)
Carlbrook (Halifax County, Virginia)
Carlen House (Mobile County, Alabama)
Carleton, Moses, House (Lincoln County, Maine)
Carleton, Robert, House (Piscataquis County, Maine)
Carlheim (Loudoun County, Virginia)
Carlin-Rathgeber House (St. Louis, Missouri)
Carlisle House (Sussex County, Delaware)
Carlisle House (Wasco County, Oregon)
Queen Anne style house built in 1886
Carll House (Dix Hills) (Suffolk County, New York)
Carll House (Huntington) (Suffolk County, New York)
Carll, Ezra, Homestead (Suffolk County, New York)
Carlos and Anne Recker House (Marion County, Indiana)
Carlos Avery House (Lorain County, Ohio)
Carlos Vierra House (Santa Fe County, New Mexico)
Carlton (Stafford County, Virginia)
Carlton D. Wall House (Wayne County, Michigan)
Carlton House (Chicot County, Arkansas)
Carlton--Frie--Tucker House (Essex County, Massachusetts)
Carlton--Gladden House (Lamar County, Texas)
Carlyle House (Alexandria, Virginia)
Carman, Cornelius, House (Dutchess County, New York)
Carmelita Mayhew House (Yuma County, Arizona)
Carmichael House (Jefferson County, Kentucky)
Carmichael-Loudon House (Yakima County, Washington)
Carminatti--Perham House (Pinal County, Arizona)
Carnahan House (Rapides Parish, Louisiana)
Carney, Sgt. William H., House (Bristol County, Massachusetts)
Carnton (Williamson County, Tennessee)
Carolands, The (San Mateo County, California)
Carolina Hall (Mobile County, Alabama)
Caroline Bancroft House (Denver County, Colorado)
Caroline Fotheringham House (Beaver County, Utah)
Caroline Grow House (Cook County, Illinois)
Caroline Kline Galland House (King County, Washington)
Caroline Lockhart Ranch (Carbon County, Montana)
Caroline Millward House (Cook County, Illinois)
Caroline W. and M. Louise Flanders House (Multnomah County, Oregon)
Carpenter Homestead (Bristol County, Massachusetts)
Carpenter House (New London County, Connecticut)
Carpenter, Christopher, House (Bristol County, Massachusetts)
Carpenter, Col. Thomas, III, House (Bristol County, Massachusetts)
Carpenter, Ezra, House (Norfolk County, Massachusetts)
Carpenter, Frank Pierce, House (Hillsborough County, New Hampshire)
Carpenter, George, House (Worcester County, Massachusetts)
Carpenter, John B., House (Clinton County, New York)
Carpenter-Lippincott House (New Castle County, Delaware)
Carpenter-Smith House (Oldham County, Kentucky)
Carr House (Solano County, California)
Carr's Hill (Albemarle County, Virginia)
Carr, Daniel, House (Grafton County, New Hampshire)
Carr, Dr. George W., House (Providence County, Rhode Island)
Carr, Robert P., House (Sagadahoc County, Maine)
Carr--Jeeves House (Middlesex County, Massachusetts)
Carrabassett Inn (Somerset County, Maine)
Carraway House (Pike County, Mississippi)
Carrie Lovejoy House (Franklin County, Ohio)
Carrie Pierce House (Dane County, Wisconsin)
Carrie Tucker House (Sharp County, Arkansas)
Carrier Houses (Rutherford County, North Carolina)
Carriger-Cowan House (Carter County, Tennessee)
Carrington House (Suffolk County, New York)
Carrington-Covert House (Travis County, Texas)
Carroll Alsop House (Mahaska County, Iowa)
Carroll Avenue, 1300 Block (Los Angeles County, California)
Carroll House (East Feliciana Parish, Louisiana)
Carroll Mansion (Baltimore, Maryland)
Carroll Place (Dorchester County, South Carolina)
Carroll-Harper House (Floyd County, Georgia)
Carroll-Hartshorn House (Middlesex County, Massachusetts)
Carrollcliffe (Westchester County, New York)
Carrollton Manor (Frederick County, Maryland)
Carrsbrook (Albemarle County, Virginia)
Carry A. Nation House (Barber County, Kansas)
Carselowey House (Craig County, Oklahoma)
Carskadon House (Mineral County, West Virginia)
Carson County Square House Museum (Carson County, Texas)
Carson H. Cosgrove House (Le Sueur County, Minnesota)
Carson House (McDowell County, North Carolina)
Carson Mansion (Humboldt County, California)
Queen Anne style Victorian Mansion built in 1886
Carson Place (Tuscaloosa County, Alabama)
Carson's Landing (Butler County, Kentucky)
Carson-Andrews Mill and Ben F.W. Andrews House (Rutherford County, North Carolina)
Carson-Young House (McDowell County, North Carolina)
Carter Allen House (Warren County, Kentucky)
Carter G. Woodson House (Washington, District of Columbia)
Carter Glass House (Lynchburg, Virginia)
Carter Hill (Kershaw County, South Carolina)
Carter Hill (Russell County, Virginia)
Carter House (Woodford County, Kentucky)
Carter House (Clayton County, Iowa)
Carter House (Tangipahoa Parish, Louisiana)
Carter Mansion (Middlesex County, Massachusetts)
Carter Plantation (Livingston Parish, Louisiana)
Carter W. Gibbes House (Maricopa County, Arizona)
Carter's Grove (James City County, Virginia)
Carter's Quarters (Murray County, Georgia)
Carter, Capt. Charles, House (Sagadahoc County, Maine)
Carter--Callaway House (Jackson County, Mississippi)
Carter--Jones House (Marion County, Arkansas)
Carter--Terry--Call House (Utah County, Utah)
Carter-Fortmiller House (Jackson County, Oregon)
Carter-Gilmer House (Charlottesville, Virginia)
Carter-Goodrich House (Yamhill County, Oregon)
Cartledge House (Lexington County, South Carolina)
Cartmill Farm House (Oklahoma County, Oklahoma)
Cartwright-Moss House (Davidson County, Tennessee)
Carty-Tussing House (Franklin County, Ohio)
Caruthers House (Yuma County, Arizona)
Carvey-Gatfield House (Orange County, New York)
Cary House (White County, Arkansas)
Cary Lawn (Weakley County, Tennessee)
Cary, Otis, House (Norfolk County, Massachusetts)
Caryl, Benjamin, House (Norfolk County, Massachusetts)
Caryswood (Campbell County, Virginia)
Casa Alvarado (Monterey County, California)
Adobe house built for Governor Juan Bautista Alvarado built in 1836
Casa Alvarez (St. Louis County, Missouri)
Casa Coe da Sol (Pinellas County, Florida)
Casa de Esperanza (Orange County, California)
Casa De Josefina (Polk County, Florida)
Casa De Muchas Flores (Pinellas County, Florida)
Casa de Parley Johnson (Los Angeles County, California)
Casa Del Mar (Sarasota County, Florida)
Casa Deldra (Essex County, New Jersey)
Casa Hispana, Whitman College (Walla Walla County, Washington)
Queen Anne style house built in 1902
Casa Juan Paisano (Pima County, Arizona)
Casa Maria (Albemarle County, Virginia)
Casa Peralta (Alameda County, California)
Casa Romantica (Orange County, California)
Casados House (Rio Arriba County, New Mexico)
Cascade Locks Work Center (Hood River County, Oregon)
Cascade Plantation (Rockingham County, North Carolina)
Cascine (Franklin County, North Carolina)
Case House (Wood County, West Virginia)
Case, Benomi, House (Hartford County, Connecticut)
Case--Shiras--Dearmore House (Baxter County, Arkansas)
Casebolt House (San Francisco County, California)
Italianate house built in 1865
Casement House (Lake County, Ohio)
Casements Annex (Volusia County, Florida)
Casements, The (Volusia County, Florida)
Casey House (Baxter County, Arkansas)
Casey House (Williamson County, Texas)
Cash-Draper House (Orange County, New York)
Cashpoint Plantation House (Bossier Parish, Louisiana)
Casiville Bullard House (Ramsey County, Minnesota)
Cason and Virginia Callaway House (Harris County, Georgia)
Cason House (Franklin County, Georgia)
Caspar Westervelt House (Bergen County, New Jersey)
Casparus F. Pruyn House (Albany County, New York)
Casper Kruse House (Franklin County, Missouri)
Casper M. Sanger House (Waukesha County, Wisconsin)
Victorian Gothic house that has been a summer home, sanitarium and convent
Casper Zorn Farmhouse (Marion County, Oregon)
Caspiana House (Caddo Parish, Louisiana)
Cassidy Farmhouse (Iowa County, Wisconsin)
Cassimus House (Montgomery County, Alabama)
Cassina Point (Charleston County, South Carolina)
Cassius Buck House (Rice County, Minnesota)
Cassius Clark Thompson House (Columbiana County, Ohio)
Casterton House (Licking County, Ohio)
Castle Hill (Albemarle County, Virginia)
Castle Hill (Windsor County, Vermont)
Castle on 19th Street (Laramie County, Wyoming)
Castle Rock (Wyandotte County, Kansas)
Castle Rock (Putnam County, New York)
Castle Street Row (Worcester County, Massachusetts)
Castle, Dr. Andrew, House (New Haven County, Connecticut)
Castle, The (San Diego County, California)
Castlewood (Chesterfield County, Virginia)
Casulon Plantation (Walton County, Georgia)
Caswell House (Oakland County, Michigan)
Caswell House (Williamson County, Texas)
Catalpa (Adair County, Iowa)
Catalpa (West Feliciana Parish, Louisiana)
Cate House (Hancock County, Maine)
Cate House (Tangipahoa Parish, Louisiana)