Maine - Area of significance: Agriculture
| Acadian Historic Buildings |
| Alfred Shaker Historic District |
| Austin-Hennessey Homestead |
| Bradford Farm Historic District |
| Brickett Place |
| Brick House Historic District |
| Charlotte Pound |
| Coburn, John G. |
| Corinth Village |
| Crystal Spring Farm |
| Dexter Grist Mill |
| Donovan-Hussey Farms Historic District |
| Dorfield Farm |
| Duncan, Beecher H., Farm |
| Dyer-Hutchinson Farm |
| Early Post Office |
| East Eddington Public Hall |
| Eastman Hill Rural Historic District |
| Eaton House |
| Elm Hill Farm |
| Emery House |
| Foster Family Home |
| Freeman Barn |
| Freeman Farm Historic District |
| Garland Grange Hall |
| Goodale-Bourne Farm |
| Goodale-Stevens Farm |
| Gordon Fox Ranch |
| Great Falls Historic District |
| Greenwood Cattle Pound |
| Hallowell Historic District |
| Harraseeket Historic District |
| Hatch House |
| Hathaway Barn |
| Heal Family House |
| Higgins Barn |
| Intervale Farm |
| Jefferson Cattle Pound |
| Larsson-Noak Historic District |
| Laudholm Farm |
| Limerick Upper Village Historic District |
| Littlefield-Chase Farmstead |
| Littlefield-Dustin Farm |
| Littlefield Homestead |
| Littlefield-Keeping House |
| Longfellow, Stephen, House |
| Lord Farm |
| Lower Alewive Historic District |
| Maine Experiment Station Barn |
| Maplewood Farm |
| Marsh Stream Farm |
| McCleary Farm |
| Mortland Family Farm |
| Murch Family House |
| Nelson Family Farm |
| New Gloucester Historic District |
| North Jay Grange Store |
| Nutting Homestead, The |
| Off-the-Neck Historic District |
| Otisfield Town Pound |
| Parsons-Piper-Lord-Roy Farm |
| Paul Family Farm |
| Peabody-Fitch House |
| Perkins, Charles, House |
| Perley, Sam, Farm |
| Pettengill House and Farm |
| Pittston Farm |
| Pownal Cattle Pound |
| Purinton Family Farm |
| Reed, Philo, House |
| Rivercroft Farm |
| Scribner Homestead |
| Soderholtz, Eric E., Cottage |
| Stearns Hill Farm |
| Stone Barn Farm |
| Swan Island Historic District |
| Thacher-Goodale House |
| Turner Cattle Pound |
| Underwood, Joseph H., House |
| Vaughan Homestead |
| Wadsworth Hall |
| Waldoborough Town Pound |
| Watkins House and Cabins |
| Wells Baptist Church Parsonage |
| Wells Homestead |
| Whitney Farm |
| Winn House |
Data from United States Park Service and Wikidata
