Maine - Area of significance: Social History
| Abyssinian Meeting House |
| Albany Town House |
| Alfred Shaker Historic District |
| All Soul's Chapel |
| Androscoggin Mill Block |
| Anson Grange #88 |
| Auburn Commercial Historic District |
| Auburn-Harpswell Association Historic District |
| Bailey Island Library Hall |
| Bangor Children's Home |
| Bangor Mental Health Institute |
| Bass Harbor Memorial Library |
| Baxter House |
| Bayside Historic District |
| Benton Grange #458 |
| Biddeford Main Street Historic District |
| Bond Street Historic District |
| Bremen Town Hall, Former |
| Broad Street Historic District |
| Brown Memorial Library |
| Burnham Tavern |
| Bussey, Louis I., School |
| Camden Great Fire Historic District |
| Camp NEOFA |
| Canadian Pacific Railway Depot, Greenville Junction, Maine |
| Children's Hospital |
| Colburn House State Historic Site |
| Colonial Apartments |
| Common, The |
| Conant-Sawyer Cottage |
| Connor-Bovie House |
| Continental Mill Housing |
| Corinth Town Hall and Corinthian Lodge #59, I.O.O.F. |
| Crescent Lodge |
| Cumberland Mills Historic District |
| Cutler Memorial Library |
| Damariscove Lifesaving Station |
| Danville Junction Grange #65 |
| Deering Estate Barn |
| Deering Street Historic District |
| Dominican Block |
| Dow, Gen. Neal, House |
| Dresden Town House |
| East Eddington Public Hall |
| Emery Homestead |
| Enterprise Grange, No. 173 |
| Excelsior Grange #5 |
| Fifth Maine Regiment Community Center |
| Fletcher's Neck Lifesaving Station |
| Franklin Grange #124 |
| Gehring Clinic |
| Gorham Historic District |
| Governor's House |
| Gray House, Old |
| Greenwood, Chester and Isabel, House |
| Greenwood Town Hall, Former |
| Harmony Hall |
| Healey Asylum |
| Hinckley Good Will Home Historic District |
| Holden Town Hall |
| Hurd, Mary R., House |
| Island Falls Opera House |
| Islesford Historical Museum and Blue Ducks Ships Store |
| Jones, Abel, House |
| Jonesboro Grange #357 |
| Jones, Eli and Sybil, House |
| Jones, John Paul, Memorial Park |
| Kezar Falls Circulating Library |
| Lakeside Grange #63 |
| Land's End Historic District |
| Lewiston Mills and Water Power System Historic District |
| Lewiston Public Library |
| Liberty Hall |
| Lightship No. 112, NANTUCKET |
| Lithgow House |
| Little, Edward, House |
| Longfellow, Stephen, House |
| Lord Mansion |
| Lovell Village Church |
| Machias Valley Grange, #360 (Former) |
| Maine Eye and Ear Infirmary |
| Maine Industrial School for Girls Historic District |
| Maine Insane Hospital |
| Maine Women's Reformatory Maternity Hospital and Nursery |
| Maine Woods Office |
| Malaga Island |
| Marcotte Nursing Home |
| Marine Hospital |
| Mariner's Church |
| Martel, Dr. Louis J., House |
| Masonic Temple |
| Mechanics' Hall |
| Memorial Hall |
| Merriconeag Grange No. 425 |
| Monson Community Church |
| Monson Engine House (Former) |
| Monticello Grange #338 |
| Moonspring Hermitage |
| Moore, Henry D., Parish House and Library |
| Mount Desert Island Hiking Trail System |
Data from United States Park Service and Wikidata
