Massachusetts - Area of significance: Social History
| Jenkins, John, Homestead |
| Jewish Cemetery |
| John Eliot Square District |
| Johnson, Edwin, Three-Decker |
| Johnson, John and Edward, Three-Decker |
| Johnson, John, Three-Decker |
| Johnson, Nathan and Mary (Polly), Properties |
| Johnson, Paul, Three-Decker |
| Joseph Fenno House-Woman's Friend Society |
| Kaller, Erick, Three-Decker |
| Kaller, Erick, Three-Decker |
| Kemp Barn |
| Kemp Place |
| King House |
| Kugel, Peter, House |
| Lancaster Industrial School for Girls |
| Lancaster Mills |
| Larson, Swan, Three-Decker |
| Lawrence Academy |
| Lawrence Avenue Historic District |
| Lawrence Model Lodging Houses |
| Lawson Tower |
| Levenson, Morris, Three-Decker |
| Liberty Farm |
| Liberty Hall |
| Lincoln-Sunset Historic District |
| Longfellow House-Washington’s Headquarters National Historic Site |
| Longwood Historic District |
| Lovejoy, Charles, House |
| Lowell National Historical Park |
| Lumb, Thomas, Three-Decker |
| Lumb, Thomas, Three-Decker |
| Lundberg, Charles, Three-Decker |
| Lyman School for Boys |
| Lyman, Theodore, School |
| Lynn Masonic Hall |
| Lynn Woods Historic District |
| Magnuson, Charles, Three-Decker |
| Main Street Cemetery |
| Malcolm X-Ella Little Collins House |
| Manchaug Village Historic District |
| Manning Manse |
| Maple Street Cemetery |
| Maplewood Cemetery |
| Maplewood Hotel |
| Marcel Breuer House and Studio |
| Mariner's House |
| Mark, John, Three-Decker |
| Masonic Temple |
| Massachusetts Mental Health Center |
| Massad, Anthony, Three-Decker |
| McCafferty, Elizabeth, Three-Decker |
| McCarron, Andrew, Three-Decker |
| McDermott, John B., Three-Decker |
| McGrath, Patrick, Three-Decker |
| McGuinness, Patrick, Three-Decker |
| McLean Hospital National Register District |
| McPartland, Frank, Three-Decker |
| McPartland, James, Three-Decker |
| Mechanics Block Historic District |
| Mechanic Street Cemetery |
| Medfield State Hospital |
| Medway Village Historic District |
| Men of Kent Cemetery |
| Methodist Church |
| Methuen Memorial Music Hall |
| Metropolitan State Hospital |
| Middleborough Center Historic District |
| Middle Cemetery |
| Middlesex Canal Historic and Archeological District |
| Millicent Library |
| Millis Center Historic District |
| Milton Cemetery |
| Mission Chapel |
| Monson Developmental Center |
| Montville Baptist Church |
| Monument Park Historic District |
| Moreland Street Historic District |
| Mountain Rest |
| Mount Hope Cemetery |
| Mount Pleasant Cemetery |
| Mount Vernon Cemetery |
| Mount Wollaston Cemetery |
| Munroe, Sarah, Three-Decker |
| Murphy, Patrick, Three-Decker |
| Myles Standish Burial Ground |
| Myrtle Baptist Church Neighborhood Historic District |
| Nell, William C., House |
| Nelson, Christina, Three-Decker |
| New England Confectionery Company Factory |
| New Riding Club |
| Newton, Edward B., School |
| Nichols, Daniel, Homestead |
| Nichols, James, House |
| Nobscot Union Chapel |
| Norfolk County Courthouse |
| Norfolk Grange Hall |
| Northampton State Hospital |
| North Bellingham Cemetery and Oak Hill Cemetery |
| North Burial Ground |
Data from United States Park Service and Wikidata
