Built during 1790s

Parker, Joseph, House (Middlesex County, Massachusetts)
Parker, Samuel, House (Middlesex County, Massachusetts)
Parker, William, House (Middlesex County, Massachusetts)
Parker--Bryson Historic District (Sumner County, Tennessee)
Patrick Calhoun Family Cemetery (Abbeville County, South Carolina)
Historic cemetery near Abbeville, SC
Patton, James "Squire," House (Orange County, New York)
Peabody, George, House (Essex County, Massachusetts)
Peabody--Fitch House (Cumberland County, Maine)
Peace Church (Cumberland County, Pennsylvania)
Peacewood (Wilkes County, Georgia)
Pennsylvania Avenue National Historic Site (Washington, District of Columbia)
Perkins House (Catawba County, North Carolina)
Perkiomen Bridge (Montgomery County, Pennsylvania)
Closed-spandrel arch bridge over Perkiomen Creek on Ridge Pike in Collegeville, Pennsylvania
Perry, Jacob P., House (Rockland County, New York)
Perry, John, Homestead (Cheshire County, New Hampshire)
Pest House (Middlesex County, Massachusetts)
Peter A. Hilton House (Schoharie County, New York)
Peter and Catherine Reyer Farmhouse (Lancaster County, Pennsylvania)
Peter and Jonathan Newmyer Farm (Fayette County, Pennsylvania)
Peter Colley Tavern and Barn (Fayette County, Pennsylvania)
Peter D. Perry House (Bergen County, New Jersey)
Peter Houghtaling Farm and Lime Kiln (Greene County, New York)
Peter P. Post House (Bergen County, New Jersey)
Pettit's Ford (York County, Pennsylvania)
Philemon Sage House (Berkshire County, Massachusetts)
Philetus Swift House (Ontario County, New York)
Philip Moore Stone House (Scioto County, Ohio)
Pierre Delassus De Luziere House (Ste. Genevieve County, Missouri)
Pierre Martin House (St. Clair County, Illinois)
Pillsbury-French House (Essex County, Massachusetts)
Piper House (Washington County, Maryland)
Piper, Rufus, Homestead (Cheshire County, New Hampshire)
Piper, Solomon, Farm (Cheshire County, New Hampshire)
Pleasant Prospect (Prince George's County, Maryland)
Pocket Rural Historic District (Bourbon County, Kentucky)
Poplar Hill (Isle of Wight County, Virginia)
Portland Head Light (Cumberland County, Maine)
Portland Head Light (Cumberland County, Maine)
Lighthouse at the entrance to the Portland Harbour.
Potter--Remington House (Providence County, Rhode Island)
Powell Farm (Chester County, Pennsylvania)
Prallsville District (Hunterdon County, New Jersey)
Presbyterian Manse (Charleston County, South Carolina)
President's Park South (Washington, District of Columbia)
Preston House (Smyth County, Virginia)
Prestwould (Mecklenburg County, Virginia)
Prestwould (Mecklenburg County, Virginia)
Prevost Manor House (Greene County, New York)
Primitive Baptist Church of Brookfield (Orange County, New York)
Prizer's Mill Complex (Chester County, Pennsylvania)
Proctor House (Garrard County, Kentucky)
Prospect Hill (Baltimore County, Maryland)
Providence Baptist Church (Clark County, Kentucky)
Providence Quaker Cemetery and Chapel (Fayette County, Pennsylvania)
Pruddentown Historic District (Morris County, New Jersey)
Purchase--Ferre House (Hampden County, Massachusetts)
Purdom--Lewis--Hutchison House (Boyle County, Kentucky)
Puu o Mahuka Heiau (Honolulu County, Hawaii)
Quaker School (Burlington County, New Jersey)
Quality Hill (Washington, District of Columbia)
Ralph Banks Place (Elbert County, Georgia)
Ralph Morgan Stone House (Montgomery County, Kentucky)
Ramsey House (Knox County, Tennessee)
Rathbone-Zabriskie House (Bergen County, New Jersey)
Readbourne (Queen Anne's County, Maryland)
Red Hills (Albemarle County, Virginia)
Redlands (Albemarle County, Virginia)
Redman Farm House (Norfolk County, Massachusetts)
Redmond House (Clark County, Kentucky)
Reed Gold Mine (Cabarrus County, North Carolina)
Reformed Dutch Church and Green (Bergen County, New Jersey)
Renick Farm (Greenbrier County, West Virginia)
Rensselaer County Courthouse (First) (Rensselaer County, New York)
Georgian style two story brick courthouse built in 1794 demolished in 1831
Rensselaerville Historic District (Albany County, New York)
Residence, The (Madison County, Virginia)
Rev. Asahel Norton Homestead (Oneida County, New York)
Rev. Joshua Vaughan House (Chester County, Pennsylvania)
Reward (Somerset County, Maryland)
Rexleigh Mill (Washington County, New York)
Ruins of an industrial mill built in 1795
Rice's Hotel (Northumberland County, Virginia)
Richard Masterson House (Carroll County, Kentucky)
Richardson, Abijah, Sr., Homestead (Cheshire County, New Hampshire)
Richardson, John, Homestead (Cheshire County, New Hampshire)
Richardson, John, House (Barnstable County, Massachusetts)
Richardson, Zachariah, House (Middlesex County, Massachusetts)
Richmond Hill (Columbia County, New York)
Rider Tavern (Worcester County, Massachusetts)
Ridgely House (Fayette County, Kentucky)
Riggs, Benjamin, House (Sagadahoc County, Maine)
Ripley Stone House (Greene County, Tennessee)
Ritter House (Dukes County, Massachusetts)
River Daniel Blue House (Moore County, North Carolina)
Riverside Cemetery (Broome County, New York)
Riverview House (Kennebec County, Maine)
Robbins, Unni II, House (Hartford County, Connecticut)
Robert E. Lee Boyhood Home (Alexandria, Virginia)
Robert Graham House (New Castle County, Delaware)
Robert Hill House (Kent County, Delaware)
Robert Russel House (Fayette County, Kentucky)
Robert Sanders House (Scott County, Kentucky)
Robert Toombs House (Wilkes County, Georgia)
Robertson-Easterling-McLaurin House (Marlboro County, South Carolina)
Robinson, Capt. Joel, House (Bristol County, Massachusetts)
Robinson-Parsons Farm (Oxford County, Maine)
Rock Spring (Jefferson County, West Virginia)
Rockford Historic District (Surry County, North Carolina)
Rockland Farm (Carroll County, Maryland)
Rockland Historic District (Baltimore County, Maryland)
Rocky Spring Presbyterian Church (Franklin County, Pennsylvania)
Roebuck Tavern (Norfolk County, Massachusetts)
Rogers, Joseph, House (Newport County, Rhode Island)
Rohrer House (Washington County, Maryland)
Rolfe Barn (Merrimack County, New Hampshire)
Romer--Van Tassel House (Westchester County, New York)
Roop's Mill (Carroll County, Maryland)
Rose Hill Farm (Frederick County, Virginia)
Rose Hill Manor (Frederick County, Maryland)
Rosedale (Washington, District of Columbia)
Royal Presidio Chapel (Monterey County, California)
Rural Mount (Hamblen County, Tennessee)
Sabin--Wheat Farm (Windham County, Vermont)
Sabine Hill (Carter County, Tennessee)
Salisbury Academy Building (Merrimack County, New Hampshire)
Salyer, Michael, Stone House (Rockland County, New York)
Sam Houston Schoolhouse (Blount County, Tennessee)
Samuel Frazier House (Blount County, Tennessee)
Samuel McMillan House (Harrison County, Kentucky)
Samuel Nixon House (Perquimans County, North Carolina)
Samuel W. Seeley House (Cumberland County, New Jersey)
San Antonio de Padua Mission (Monterey County, California)
San Buenaventura Mission Aqueduct (Ventura County, California)
San Felipe de Neri Church (Bernalillo County, New Mexico)
San Gabriel Mission (Los Angeles County, California)
San Miguel del Vado Historic District (San Miguel County, New Mexico)
Sanchez Powder House Site (St. Johns County, Florida)
Sanderson House (Jones County, North Carolina)
Sands, Robert, Estate (Dutchess County, New York)
Sanford House (Warren County, New York)
Sanford-Humphreys House (New Haven County, Connecticut)
Santee Canal (Berkeley County, South Carolina)
Sargent House (Pike County, Ohio)
Once an Underground Railroad Station
Sawyer-Curtis House (Washington County, Ohio)
Schaumboch's Tavern (Berks County, Pennsylvania)
Schwartz Tavern (Nottoway County, Virginia)
Sedgwick Historic District (Hancock County, Maine)
Seguin Island Light Station (Sagadahoc County, Maine)
Seigle Homestead (Warren County, New Jersey)
Selleck, Sylvanus, Gristmill (Fairfield County, Connecticut)
Sevier Station (Montgomery County, Tennessee)
Shady Side (Fayette County, Kentucky)
Shaker Farm (Berkshire County, Massachusetts)
Sharples Homestead (Chester County, Pennsylvania)
Sheldon Farmhouse (Schenectady County, New York)
Shemuel Kearney House (Franklin County, North Carolina)
Shenandoah County Courthouse (Shenandoah County, Virginia)
Shepherd Hall (Ohio County, West Virginia)
Sherman Farm (Rensselaer County, New York)
Shiloh Church (Newport County, Rhode Island)
Ship Inn (Chester County, Pennsylvania)
Shirley Shaker Village (Unspecified county, Massachusetts)
Shuford-Hoover House (Catawba County, North Carolina)
Siegfried's Dale Farm (Berks County, Pennsylvania)
Simeon Smith House (Rutland County, Vermont)
Simi Adobe-Strathearn House (Ventura County, California)
Simon French House (Christian County, Kentucky)
Simonds Tavern (Middlesex County, Massachusetts)
Skaneateles Historic District (Onondaga County, New York)
Skelton, Thomas, House (Cumberland County, Maine)
Skippack Bridge (Montgomery County, Pennsylvania)
Stone arch bridge over Skippack Creek on Germantown Pike in Evansburg, PA
Slate Quarry Road Dutch Barn (Dutchess County, New York)
Sloan-Parker House (Hampshire County, West Virginia)
Sloat's Dam and Mill Pond (Rockland County, New York)
Smith Estate (Suffolk County, New York)
Smith's Tavern (Spartanburg County, South Carolina)
Historic home in Roebuck, SC
Smith, Abigail Adams, Museum (New York County, New York)
Smith--Mason Farm (Cheshire County, New Hampshire)
Snapp House (Shenandoah County, Virginia)
Snow Hill (Prince George's County, Maryland)
Snowland (Kent County, Delaware)
Somerville (Kent County, Delaware)
South Lee Historic District (Berkshire County, Massachusetts)
South River Friends Meetinghouse (Lynchburg, Virginia)
South Schraalenburgh Church (Bergen County, New Jersey)