Built during 1860s

Hollywood (Bolivar County, Mississippi)
Hollywood Cemetery (Richmond, Virginia)
Holmes-Tallman House (Middlesex County, New Jersey)
Holt-Frost House (Alamance County, North Carolina)
Holy Cross Church and Convent (Brown County, Wisconsin)
Roman Catholic church and convent designed in the Romanesque and Italianate styles
Holy Cross Lutheran Church of Wartburg (Monroe County, Illinois)
Holy Cross Roman Catholic Church (Baltimore, Maryland)
Holy Family Catholic Church (Darke County, Ohio)
Holy Rosary Catholic Church (Auglaize County, Ohio)
Holy Trinity Church Rectory and Convent (McLean County, Illinois)
Holy Trinity Episcopal Church (Scott County, Kentucky)
Home of Peace (Lewis and Clark County, Montana)
Homer B. DeLong House (Rock County, Wisconsin)
Homer-Lovell House (Middlesex County, Massachusetts)
Honey Springs Battlefield (McIntosh County, Oklahoma)
Honigsberger Store (Calaveras County, California)
Honolulu House (Calhoun County, Michigan)
Hood College Historic District (Frederick County, Maryland)
Hooker, John and Isabella, House (Hartford County, Connecticut)
Hoopa (Humboldt County, California)
Hopkins' Covered Bridge Farm (Sussex County, Delaware)
Hopkins, Elisha, House (Middlesex County, Massachusetts)
Hopkinsville Warehouse Historic District (Christian County, Kentucky)
Horace A. Skinner House (Beaver County, Utah)
Horace G. Lyons House (Shawnee County, Kansas)
Horace Tucker House (Jefferson County, Washington)
Horace Wright House (Franklin County, Ohio)
Horn House (Winneshiek County, Iowa)
Hornbine School (Bristol County, Massachusetts)
Horton-Suiter House (Scott County, Iowa)
Hosack House (Knox County, Ohio)
Hotaling Annex East (San Francisco County, California)
Two story Italianate cast iron facade building built in 1866
House at 105 Marion Street (Norfolk County, Massachusetts)
House at 115--117 Jewett Street (Middlesex County, Massachusetts)
House at 12 West Water Street (Middlesex County, Massachusetts)
House at 1249-1251 Scott Street (San Francisco County, California)
House at 1254-1256 Montgomery Street (San Francisco County, California)
House at 1301 Montgomery Street (San Francisco County, California)
House at 14 Chestnut Street (Middlesex County, Massachusetts)
House at 1646 W. Second Street (Scott County, Iowa)
House at 184 Albany Avenue (Ulster County, New York)
House at 19 Tremont Street (Middlesex County, Massachusetts)
House at 197 Morrison Avenue (Middlesex County, Massachusetts)
House at 3 Crown Street (Putnam County, New York)
House at 307 Lexington Street (Middlesex County, Massachusetts)
House at 323 Themis Street (Cape Girardeau County, Missouri)
House at 364 Cedar Avenue (Monmouth County, New Jersey)
House at 44 Stanton Road (Norfolk County, Massachusetts)
House at 736 Palisado Avenue (Hartford County, Connecticut)
House at 81 Pearl Street (Middlesex County, Massachusetts)
Houses at 2000-2018 Delancey Street (Philadelphia County, Pennsylvania)
Houses at 208-218 East 78th Street (New York County, New York)
Houston Jail (Winston County, Alabama)
Howard High School (New Castle County, Delaware)
Howell and Brothers Paper Hangings Manufactory (Philadelphia County, Pennsylvania)
Howell-Theurer House (Cache County, Utah)
Howland Chapel School (Northumberland County, Virginia)
Hoyt, Benjamin, House (Middlesex County, Massachusetts)
Hubbard, Thomas Russell, House (Hillsborough County, New Hampshire)
Hudson River State Hospital, Main Building (Dutchess County, New York)
Huffman Avenue Historic District (Pike County, Kentucky)
Huffman Mill Covered Bridge (Spencer County, Indiana)
Covered Burr Arch truss bridge over Anderson River on CR 1475 East
Hugh T. Rinehart House (Auglaize County, Ohio)
Hughes, Langston, House (New York County, New York)
Huguenot Schoolhouse (Orange County, New York)
Hull-Hawkins House (Suwannee County, Florida)
Hunter-Dawson Home (New Madrid County, Missouri)
Mansion in New Madrid operated as a State Historic Site
Hunting Creek Railroad Bridge (Burke County, North Carolina)
Huron Islands Lighthouse (Marquette County, Michigan)
Hurst-Pierrepont Estate (Putnam County, New York)
Hutchinson Farm (Allegheny County, Pennsylvania)
Hyde Chapel (Iowa County, Wisconsin)
Hyde's Hotel (Rutland County, Vermont)
I. G. Baker House (Chouteau County, Montana)
I.O.O.F. Hall (Clayton County, Iowa)
I.O.O.F. Hall (San Joaquin County, California)
Idaho City (Boise County, Idaho)
Iddings-Baldridge House (Centre County, Pennsylvania)
Idler's Retreat (Rutherford County, Tennessee)
Illinois State Capitol (Sangamon County, Illinois)
Immaculate Conception Church (Hancock County, Kentucky)
Immaculate Conception Church (Lorain County, Ohio)
Immanuel Evangelical Lutheran Church (Iron County, Missouri)
Independence Downtown Historic District (Montgomery County, Kansas)
Indian Mill (Wyandot County, Ohio)
Indiana Avenue Historic District (Marion County, Indiana)
Inscription Rock (Navajo County, Arizona)
Inskip Hotel (Butte County, California)
Institute for Colored Youth (Philadelphia County, Pennsylvania)
Ione City Centenary Church (Amador County, California)
Iowa Soldiers' Orphans' Home (Scott County, Iowa)
Ipswich Mills Historic District (Essex County, Massachusetts)
IRIS (Shipwreck) (Door County, Wisconsin)
Iron Block (Milwaukee County, Wisconsin)
Isaac Brown House (Kalamazoo County, Michigan)
Isaac McCormick House (St. Charles County, Missouri)
Isaac N. Reynolds House (Eaton County, Michigan)
Isaac Williams House (Sampson County, North Carolina)
Island Hotel (Levy County, Florida)
Iuka Battlefield (Tishomingo County, Mississippi)
Iviswold (Bergen County, New Jersey)
Ivory McKusick House (Washington County, Minnesota)
Ivory Quinby House (Warren County, Illinois)
J. & C. Wipf Mills (Waupaca County, Wisconsin)
Former flour and lumber mill, and hydroelectric plant, now serving as a cafe
J. C. Peters House (Scott County, Iowa)
J. F. Schroer House--Store (St. Charles County, Missouri)
J. G. and Regina Long House (Jasper County, Iowa)
J. H. Morgan House (Portage County, Wisconsin)
J. J. Hoag House (Delaware County, Iowa)
J. J. Johnson Farm (Williamson County, Texas)
J. K. Gill Building (Marion County, Oregon)
J. L. Hamilton House (Franklin County, Ohio)
J. M. Coman House (Tishomingo County, Mississippi)
J. Newton Conger House (Knox County, Illinois)
J. W. Stewart House (Scott County, Iowa)
J.B. Labeau, Jeweler (Madison County, Montana)
J.S. Rockfellow House (Madison County, Montana)
Jabez Faux House And Barn (Sanpete County, Utah)
Jack Daniel Distillery (Moore County, Tennessee)
Jackson Bridge (Parke County, Indiana)
Covered bridge over Sugar Creek on CR N50W
Jackson House (Washington County, Arkansas)
Jacob Bedenbaugh House (Newberry County, South Carolina)
Jacob Fox House (Victoria County, Texas)
Jacob Goering House (Scott County, Iowa)
Jacob H. Bair House (Stark County, Ohio)
Jacob Hamblin House (Washington County, Utah)
Jacob Leinenkugel Brewery (Chippewa County, Wisconsin)
Seventh oldest brewery in the United States and oldest business in Chippewa Falls, perhaps in Wisconsin.
Jacob Savageot House and Saloon (Boyd County, Kentucky)
Jacob Suiter House (Scott County, Iowa)
Jacob Weber House (Columbia County, Wisconsin)
Jacob's Church (Montgomery County, Ohio)
Jaffrey Mills (Cheshire County, New Hampshire)
James A. Sledge House (Clarke County, Georgia)
James and Mary Lawson House (Salem County, New Jersey)
James B. Dutton House (Lapeer County, Michigan)
James B. Stephens House (Multnomah County, Oregon)
James B. Wakefield House (Faribault County, Minnesota)
James B. Weaver House (Davis County, Iowa)
James Clemens House (St. Louis, Missouri)
James Dayton House, II (Lake County, Ohio)
James E. M. Barkman House (Clark County, Arkansas)
James E. Slaton House (Hopkins County, Kentucky)
James F. Harcourt House (Rush County, Indiana)
James F. Irvin House (Jefferson County, Kentucky)
James G. Willie House (Cache County, Utah)
James H. Bibb House (Madison County, Alabama)
James H. Funk House (Jefferson County, Kentucky)
James L. Dix House (Warren County, New York)
James Lawrence Kernan Hospital (Unspecified county, Maryland)
James Lee House (Shelby County, Tennessee)
James M. Forney House (Des Moines County, Iowa)
James M. Futch House (Hinds County, Mississippi)
James Malone House (Caswell County, North Carolina)
James McCollister Farmstead (Johnson County, Iowa)
James McCormick Mansion (Dauphin County, Pennsylvania)
Second Empire architectural style built post Civil War
James Milne House (Clackamas County, Oregon)
James Morrow House (New Castle County, Delaware)
James Noble Sherwood House (Allegan County, Michigan)
James P. Hidley Cottage (Butler County, Ohio)
James Pratt Funeral Service (Hartford County, Connecticut)
James River Steam Brewery Cellars (Henrico County, Virginia)
James S. Thompson House (Mercer County, Illinois)
James Smith House (Scott County, Iowa)
James Spullock Williamson House (Lowndes County, Alabama)
James Tompkins House (Outagamie County, Wisconsin)
James Trigg House (Jefferson County, Kentucky)
James W. and Mary Way House (St. Louis County, Missouri)
James Walker House (Jefferson County, Kentucky)
James Weldon House (Bracken County, Kentucky)
Janney Furnace (Calhoun County, Alabama)
Jared H. Gay House (Oceana County, Michigan)
Jared L. Brush Barn (Weld County, Colorado)
Jasper A. Ware House (Otoe County, Nebraska)
Jay Cooke House (Ottawa County, Ohio)
Jefferson Barracks National Cemetery (St. Louis County, Missouri)
Jefferson City National Cemetery (Cole County, Missouri)
Jefferson County Courthouse (Jefferson County, Pennsylvania)
Jefferson County Courthouse Complex (Jefferson County, New York)
Jefferson Davis Capture Site (Irwin County, Georgia)
Jefferson Ordnance Magazine (Marion County, Texas)
Jefferson Playhouse (Marion County, Texas)
Jefferson Town House (Lincoln County, Maine)
Jemison-Vandegraaff House (Tuscaloosa County, Alabama)
Jenkins' Ferry Battleground (Grant County, Arkansas)
Jenkins, Franklin B., House (Middlesex County, Massachusetts)
Jens Hansen Wagon and Carriage Shop (Waupaca County, Wisconsin)
Former wagon works repurposed for modern use
Jeremiah H. Service House (St. Joseph County, Indiana)