All - Architectural style - modern architecture
| Light House |
| Liljestrand House |
| Lincoln High School |
| Lincoln School |
| Lincoln Theatre |
| Little River High School |
| Loewy House |
| Logan Pass Visitor Center |
| Lovell Beach House |
| Luckey Hospital |
| Lynn Hall |
| Macedonia Baptist Church |
| Madisonville Armory |
| Malcolm X House |
| Malvern Rosenwald School |
| M and J Nelson Building |
| Manhattan Beach Jewish Center |
| Manitoga |
| Marcel Breuer House and Studio |
| Marin County Civic Center |
| Marquam Manor |
| Martin County Court House, Old |
| Martin, Dr. Richard and Mrs Margaret, House |
| Martin, John A., Grade School |
| Mayflower Building |
| Maytag Aircraft Building |
| McCook County Courthouse |
| McDaniel Building |
| McKeage, John & Florence, House |
| McLean, Elizabeth, House |
| Meadowbrook Country Club |
| Meaker, C.G., Food Company Warehouse |
| Mello, Clarence and Mary, House |
| Mercantile Bank & Trust Building |
| Mercantile Deposit and Trust |
| Merritt, S.D., House |
| Michigan State Medical Society Building |
| Midland Tower |
| Midtown Motor Lodge |
| Mills, Beaven W., House |
| Mills, Willis N, House |
| Milo Apartments |
| Milwaukee Hospital |
| Minella, Angelo and Lillian, House |
| M & O Chevrolet Company |
| Montana Veterans and Pioneers Memorial Building |
| Monterey County Court House |
| Moran Municipal Generation Station |
| Morelli House |
| Morgan, David-Bronson, Earl A., House |
| Motor Coach Division Building-Denver Tramway Company |
| Moulin Rouge Hotel |
| Mount Horeb Public School |
| Mount Saint Joseph |
| Muirhead, Robert and Elizabeth, House |
| Municipal Building |
| Munson Hall |
| Murphy, Charles and Peggy House |
| Murphy, Joseph and Ann, Residence |
| Mutual Home & Savings Association Building |
| Nagel House |
| Neillsville Masonic Temple Lodge No. 163 |
| Neillsville Post Office |
| Neils, Frieda and Henry J., House |
| Neutra, Richard and Dion, VDL Research House II |
| New Orleans Federal Savings and Loan Building |
| Nichols, John T., and Margaret, House |
| Nielsen, Lucienne, House |
| Nobles County War Memorial Building |
| Nokomis and Navarre Apartment Buildings |
| Nooter Corporation Building |
| Nordlund House |
| North Eighth Street Plaza |
| Northern Hotel |
| Northstar Center |
| Northwestern Bell Telephone Company Regional Headquarters |
| Norton, John, House |
| Nystrom Elementary School-The Maritime Building |
| Oakley High School Stadium |
| Oak Park Village Hall |
| Oil and Gas Building |
| Old West Austin Historic District |
| Oleson Park Music Pavilion |
| Olson, Charles and Fae, House |
| Olsson, Don E., House and Garage |
| One Main Place |
| Ooten House |
| Orchard Terrace Apartments |
| Oregon State Capitol |
| Orlando Utilities Commission Administration Building |
| Overland Theater |
| Pabst Brewing Company Complex |
| Pacific Electric Railroad Bridge |
| Paine House |
| Paint Lick School |
| Palace Hotel |
| Palm Springs Tramway Valley Station |
| Parkside Elementary School |
| Parris, Fred W., Towers |
| Pascagoula High School, Old |
Data from United States Park Service and Wikidata
