Built during 1830s

Old State Capitol (Hinds County, Mississippi)
Old State House (Pulaski County, Arkansas)
Old Statehouse (Franklin County, Kentucky)
Old Stone Arch Bridge (Clark County, Illinois)
Old Stone Barracks (Clinton County, New York)
Old Stone Presbyterian Church (Hunterdon County, New Jersey)
Old Town Hall (Middlesex County, Massachusetts)
Old Town Hall (Berkshire County, Massachusetts)
Old Town House (York County, Maine)
Old Yale Fence (New Haven County, Connecticut)
Olde Store (John O'Ferrell Store) (Lagrange County, Indiana)
Oldenburg Historic District (Franklin County, Indiana)
Olivas Adobe (Ventura County, California)
Oliver Wiswall House (Columbia County, New York)
Ollie's Tavern (Clark County, Ohio)
Onderdonk, Horatio Gates, House (Nassau County, New York)
Oran District No. 22 Schoolhouse (Onondaga County, New York)
Orange Street Historic District (New Haven County, Connecticut)
Oregon Historic District (Montgomery County, Ohio)
Original Congregational Church of Wrentham (Norfolk County, Massachusetts)
Orrin White House (Washtenaw County, Michigan)
Ory House (East Baton Rouge Parish, Louisiana)
Osterville Baptist Church (Barnstable County, Massachusetts)
Oswego-Oneida Streets Historic District (Onondaga County, New York)
Owen Lovejoy Homestead (Bureau County, Illinois)
Owen Plantation House (Jefferson County, Alabama)
Oxford Historic District (Chester County, Pennsylvania)
Oxford Historic District (Granville County, North Carolina)
Oxford-Crown Historic District (Worcester County, Massachusetts)
Paget House and Heigold House Facade (Jefferson County, Kentucky)
Palmer-Perkins House (Jefferson County, Florida)
Palmyra Center Hotel (Portage County, Ohio)
Park Hill Mission Cemetery (Cherokee County, Oklahoma)
Park Street Row (Cumberland County, Maine)
Parkersville Friends Meetinghouse (Chester County, Pennsylvania)
Parks E. Ball House (Pickens County, Alabama)
Parsons House (Cole County, Missouri)
Paschal Miller House (St. Lawrence County, New York)
Patrick Maguire House (Maury County, Tennessee)
Patroon Agent's House and Office (Rensselaer County, New York)
Patterson-Turner Homeplace (Hart County, Georgia)
Paxton House (Lincoln County, Mississippi)
Payne, Daniel, House (Hartford County, Connecticut)
Peak House (Trimble County, Kentucky)
Pease Homestead (Montgomery County, Ohio)
Peck--Porter House (Cheshire County, New Hampshire)
Pelton Mill (Dutchess County, New York)
Pemberton's Headquarters (Warren County, Mississippi)
Pembroke Friends Meetinghouse (Plymouth County, Massachusetts)
Pendarvis (Iowa County, Wisconsin)
Penfield Historic District (Greene County, Georgia)
Pennsylvania Furnace Mansion (Huntingdon County, Pennsylvania)
Pennsylvania Hall, Gettysburg College (Adams County, Pennsylvania)
Pequabuck Bridge (Hartford County, Connecticut)
Percy District School House, (Former) (Sagadahoc County, Maine)
Perry Mill (Newport County, Rhode Island)
Perrysburg Historic District (Wood County, Ohio)
Petaluma Adobe (Sonoma County, California)
Peter B. Sarchet House (Guernsey County, Ohio)
Peter Bitley House (Yates County, New York)
Peter Chandler House (Oswego County, New York)
Peter Miller House (Lorain County, Ohio)
Peter Yawger House (Cayuga County, New York)
Petersburg Courthouse (Petersburg, Virginia)
Petersburg Tollhouse (Somerset County, Pennsylvania)
Peterstown House (Monroe County, Illinois)
Peyton House (Hinds County, Mississippi)
Phelps Farms Historic District (Litchfield County, Connecticut)
Philadelphia Church of Christ (Warren County, Tennessee)
Philadelphia Contributionship (Philadelphia County, Pennsylvania)
Philbrook Farm Inn (Coos County, New Hampshire)
Philip Noon House (Cambria County, Pennsylvania)
Phillips--Sims House (Troup County, Georgia)
Philo Newton Cobblestone House (Niagara County, New York)
Piedmont (Albemarle County, Virginia)
Pier Cemetery (Fond du Lac County, Wisconsin)
First burial site of white settlers in Fond du Lac County
Pierce Farm Historic District (Middlesex County, Massachusetts)
Piereus Store (Charlottesville, Virginia)
Pigeon Forge Mill (Sevier County, Tennessee)
Pine Hill (Maury County, Tennessee)
Pineview (Bertie County, North Carolina)
Pinewood (Amite County, Mississippi)
Piney Point Coast Guard Light Station (St. Mary's County, Maryland)
Pioneer Aztalan Site (Jefferson County, Wisconsin)
A collection of structures showing 19th Century Wisconsin life
Pittsboro Masonic Lodge (Chatham County, North Carolina)
Pittsfield Historic District (Pike County, Illinois)
Pittston Congregational Church (Kennebec County, Maine)
Plainfield Halfway House (Will County, Illinois)
Planters Hall (Warren County, Mississippi)
Pleasant Grove Camp Meeting Ground (Union County, North Carolina)
Pleasant Hill (Adams County, Mississippi)
Pleasant Hill Baptist Church c1836 (Fulton County, Georgia)
Pleasant Valley Grange Hall (Oneida County, New York)
Plinlimmon Farm (Baltimore County, Maryland)
Plummer's Station (Conway County, Arkansas)
Poplar Hill (Grainger County, Tennessee)
Poplar Point Lighthouse (Washington County, Rhode Island)
Port Royal Road (Montgomery County, Tennessee)
Portage Canal (Columbia County, Wisconsin)
Porter, Dr. Joseph Y., House (Monroe County, Florida)
Portico Row (Philadelphia County, Pennsylvania)
Portland Historic District (Jefferson County, Kentucky)
Portsmouth Naval Hospital (Portsmouth, Virginia)
Post House (Madison County, Illinois)
Pottawatomie Lighthouse (Door County, Wisconsin)
Poughkeepsie City Hall (Dutchess County, New York)
Powder Magazine (East Baton Rouge Parish, Louisiana)
Powhatan Rural Historic District (King George County, Virginia)
Prairie Spring Hotel (Lafayette County, Wisconsin)
Prattsville Reformed Dutch Church (Greene County, New York)
Pray-Starkweather House (Lucas County, Ohio)
Presbyterian Church in Basking Ridge (Somerset County, New Jersey)
Presbyterian Church of Fredericksburg (Fredericksburg, Virginia)
Presbyterian Manse (Marion County, Texas)
Prescott Town House (Worcester County, Massachusetts)
Price Memorial Hall (Lumpkin County, Georgia)
Primrose Cottage (Fulton County, Georgia)
Prince's Cabin (Walla Walla County, Washington)
Hand hewn timber cabin built in 1837
Pritchard's Outlook Historic District (Allegan County, Michigan)
Prospect Hill (Botetourt County, Virginia)
Prospect House (Middlesex County, Massachusetts)
Pugh Dungan House (Bucks County, Pennsylvania)
Pulpit Rocks (Huntingdon County, Pennsylvania)
Pulver--Bird House (Dutchess County, New York)
Purcellville Historic District (Loudoun County, Virginia)
Purefoy--Dunn Plantation (Wake County, North Carolina)
Purefoy-Chappell House and Outbuildings (Wake County, North Carolina)
Purnell House (Sullivan County, New Hampshire)
Putnam County Courthouse (Putnam County, Illinois)
Putnam Hill Historic District (Fairfield County, Connecticut)
Putnamville Presbyterian Church (Putnam County, Indiana)
Quality Hill Historic District (Providence County, Rhode Island)
R. Walker Barn (New Castle County, Delaware)
Rabbit Hash Historic District (Boone County, Kentucky)
Raccoon Furnace (Greenup County, Kentucky)
Ruins of a 35-foot high iron furnace
Ragersville School (Tuscarawas County, Ohio)
Railroad Hotel (Middlesex County, Massachusetts)
Rainey House (Williamson County, Tennessee)
Raisin Valley Friends Meetinghouse (Lenawee County, Michigan)
Ralph Hardesty Stone House (Muskingum County, Ohio)
Rancocas Historic Village (Burlington County, New Jersey)
Randel, Culver House and Mill (Orange County, New York)
Randle House (Stanly County, North Carolina)
Randolph-Whittle House (Bibb County, Georgia)
Rankin, John, House (Kings County, New York)
Rattlesnake Springs (Bradley County, Tennessee)
Ravenna (Adams County, Mississippi)
Raymond, Isaac M., Farm (Windsor County, Vermont)
Read School (Kent County, Rhode Island)
Ready-Twyman House (Woodford County, Kentucky)
Rebecca Vaughan House (Southampton County, Virginia)
Red Brick School (Norfolk County, Massachusetts)
Red Brick Tavern (Madison County, Ohio)
Red Fox Inn (Loudoun County, Virginia)
Red Lane Tavern (Powhatan County, Virginia)
Red Mill Farm (Oswego County, New York)
Redding-Hill House (Chariton County, Missouri)
Reed and Barton Complex (Bristol County, Massachusetts)
Reedy Rill (Warren County, North Carolina)
Reformed Church of Newtown Complex (Queens County, New York)
Reformed Church, The (Herkimer County, New York)
Reformed Dutch Church of Blawenburg (Somerset County, New Jersey)
Reformed Dutch Church of New Hurley (Ulster County, New York)
Reformed Mennonite Church, Former (Erie County, New York)
Regester Log House (Washington County, Pennsylvania)
Reid-Glanton House (Troup County, Georgia)
Rembert Church (Lee County, South Carolina)
Remington--Williamson Farm (Chittenden County, Vermont)
Render Family Homestead (Meriwether County, Georgia)
Renick Farm (Pickaway County, Ohio)
Rensselaer County Courthouse (Second) (Rensselaer County, New York)
Greek Revival courthouse built in 1831 demolished in 1895
Reuben Sale House (Oldham County, Kentucky)
Reuter Dyer House (Jefferson County, New York)
Rev. D. B. Lyman House (Hawaii County, Hawaii)
Rev. Ebenezer Washburn House (Franklin County, Ohio)
Rev. John H. Gray House (Greene County, Alabama)
A historic house in Eutaw, Alabama.
Reynoldsburg--Paris Road (Benton County, Tennessee)
Rhea-McEntire House (Morgan County, Alabama)
A historic antebellum Greek Revival mansion located along the shoreline of the Tennessee River's Wheeler Lake in Decatur, Alabama.
Rhoads--Lorah House and Barn (Berks County, Pennsylvania)
Rice, Ezra, House (Worcester County, Massachusetts)
Rice-Dodge-Burgess Farm (Herkimer County, New York)
Rich-McCormick Woolen Factory (Clinton County, Pennsylvania)
Richard Skees House (Hardin County, Kentucky)
Richardson, Dr. S. O., House (Middlesex County, Massachusetts)
Richland Historic District (Kalamazoo County, Michigan)
Richland Plantation (East Feliciana Parish, Louisiana)
Richmond Community Church (Cheshire County, New Hampshire)
Riddick House (Suffolk, Virginia)
Riddle--Friend House (Hamilton County, Ohio)
Ridgewood (Muscogee County, Georgia)
Rion Hall (Jefferson County, West Virginia)
Ripley Historic District (Tippah County, Mississippi)
Rishel Covered Bridge (Northumberland County, Pennsylvania)
Covered bridge over Chillisquaque Creek on Covered Bridge Road
Rivanna Farm (Fluvanna County, Virginia)