Massachusetts - Role: Building
| Perkins Estate |
| Perkins, John, House |
| Perkins, Joseph, House |
| Perrin, William, House |
| Perry, James, House |
| Pest House |
| Pettengill, C. F., House |
| Petterson, Lars-Adolph Carlson Three-Decker |
| Petterson, Lars-Fred Gurney Three-Decker |
| Petterson,Lars-James Reidy Three-Decker |
| Petterson, Lars-Silas Archer Three-Decker |
| Phillips, E. M., House |
| Phillips Woolen Mill |
| Phinney, William and Jane, House |
| Phoenix Building |
| Picard, Israel, House |
| Pierce, Capt, Mial, Farm |
| Pierce, F. Lincoln, Houses |
| Pierce-Hichborn House |
| Pierce House |
| Pierce House |
| Pierce Organ Pipe Factory |
| Pierce, Peter, Store |
| Pierce, Sylvester K., House |
| Pilgrim Congregational Church |
| Pilgrim Congregational Church |
| Pilgrim Congregational Church |
| Pilgrim Hall |
| Pilgrim Memorial Church and Parish House |
| Pilgrim Mills |
| Pillsbury-French House |
| Pillsbury Summer House |
| Pine Street School |
| Pine Street School |
| Pinkham House |
| Pinkham, Lydia, House |
| Pinkham, Richard, House |
| Pittsfield & North Adams Passenger Station and Baggage & Express House |
| Platts-Bradstreet House |
| Pleasant Street Congregational Church |
| Pleasant Street Firehouse |
| Pleasant Street School |
| Pleasant Street School |
| Plimpton, Simon, Farmhouse |
| Plimpton-Winter House |
| Plummer Memorial Library |
| Plymouth Antiquarian House |
| Plymouth Post Office Building |
| Pocasset Firehouse No. 7 |
| Point Allerton Lifesaving Station |
| Polish National Home |
| Poli's Palace Theater |
| Pond Hill School |
| Pond Street School |
| Ponkapoag Camp of Appalachian Mountain Club |
| Poor House and Methodist Cemetery |
| Porcellian Club |
| Porter-Phelps-Huntington House |
| Port Royal House |
| Potter Estate |
| Potter-O'Brian House |
| Power, Charles Whittlesey, House |
| Pratt, Capt. Josiah, House |
| Pratt, Dexter, House |
| Pratt-Faxon House |
| Pratt Historic Building |
| Pratt House |
| Pratt, Miles, House |
| Pratt, Stillman, House |
| Prentiss, Addison, House |
| Prentiss-Payson House |
| Prentiss, William, House |
| Prescott Estate |
| Prescott, Gustavus G., House |
| Prescott Town House |
| Pressey-Eustis House |
| Primrose Street Schoolhouse |
| Printers Building, The |
| Proctor, John, House |
| Proctor, John, House |
| Proctor, William, House |
| Produce Exchange Building |
| Prospect Congregational Church |
| Prospect Hill School |
| Prospect House |
| Providence Court |
| Providence Street Firehouse |
| Provincetown Public Library |
| Provost, Arthur, Three-Decker |
| Publicity Building |
| Punchard, Benjamin House |
| Purchase-Ferre House |
| Puritan House |
| Putnam, Deacon Edward, Jr., House |
| Putnam, Gen. Israel, House |
| Putnam, Gen. Rufus, House |
| Putnam, James, Jr., House |
| Putnam, Otis, House |
| Putnam, Rev. Daniel, House |
| Qheguechan Club |
Data from United States Park Service and Wikidata
