The Bridgton Public Library, formerly the Dalton Holmes Davis Memorial Library, is the public library of Bridgton, Maine. It is located at 1 Church Street, in an architecturally distinguished Classical Revival building designed by Harry S. Coombs and built in 1913. The building is listed on the National Register of Historic Places.

The Odd Fellows Block is a historic commercial building at 182-190 Lisbon Street in Lewiston, Maine. Built in 1876, it is an important early work of Lewiston architect George M. Coombs, then in partnership with William H. Stevens. It is a significant local example of commercial Victorian Gothic architecture, which typified Lewiston's downtown of the period. The building was listed on the National Register of Historic Places in 1986.

The Dominican Block is an historic multifunction building at 141-145 Lincoln Street in Lewiston, Maine. The Queen Anne style block was built in 1882 to a design by the noted local architect George M. Coombs, and was for many years one of the primary social centers for the city's burgeoning French-American community. It was listed on the National Register of Historic Places in 1980.

The First Callahan Building is an historic commercial and residential building at 276 Lisbon Street in Lewiston, Maine. Built in 1892 to a design by noted local architect George M. Coombs, the Renaissance Reviva brick building was part of a major development on the city's main commercial street by the Callahan brothers, owners of a local gentleman's furnishings store. The building was listed on the National Register of Historic Places in 1986.

The Dingley Building, formerly the Oak Street School, is a historic municipal building at 36 Oak Street in Lewiston, Maine. Built in 1890, it is a distinctive local example of Richardsonian Romanesque architecture, designed by local architect George M. Coombs. It was added to the National Register of Historic Places in 1976. It now houses the Lewiston school system's administrative offices.

The Gay-Munroe House is an historic house located at 64 Highland Avenue in Auburn, in the U.S. state of Maine. Built in 1878 for Charles Gay, a local shoe manufacturer, it features an architecturally eclectic mix of Late Victorian decorations. It is also notable as the home for many years of Willard Noble Munroe, another leading shoe manufacturer. The house was listed on the National Register of Historic Places in 2001.

The First Congregational Church, United Church of Christ, also known as the New Old South Congregational Church, is a historic church at 235 Main Street in Farmington, Maine. The congregation's present sanctuary is a brick Romanesque structure designed by George M. Coombs and was completed in 1887. It is the town's finest 19th-century church, and one of the most architecturally sophisticated in the region. It was listed on the National Register of Historic Places in 1974. The congregation, established in 1814, celebrated its 200th anniversary in 2014.

The Franklin County Courthouse is a courthouse located in Farmington, Maine, the county seat of Franklin County. The 1885 courthouse represents a sophisticated design by George M. Coombs, with an addition in 1917 by Coombs' son, Harry Coombs. The building, the county's first purpose-built courthouse, was listed on the National Register of Historic Places in 1983.

The Cutler Memorial Library building houses the public library of Farmington, Maine. It is located at 117 Academy Street, between the downtown area and the campus of the University of Maine at Farmington. Its building, dedicated to the memory of Nathan Cutler, was built in 1901-03 as the town's first dedicated library building, and was added to the National Register of Historic Places in 1973.

George M. Coombs was an American architect in practice in Lewiston, Maine from 1874 to 1909.

Harry S. Coombs (1878-1939) was an American architect practicing in Lewiston, Maine. He was the son of and successor to architect George M. Coombs.

C. Parker Crowell (1876–1959) was an American architect in practice in Bangor, Maine, from 1902 until his retirement in 1956. Crowell and his firm would design over 1000 buildings in the course of his career. The firm Crowell co-founded is still in business as WBRC.

The Rumford Municipal Building is located on Congress Street in the central business district of Rumford, Maine. Built in 1915 to a design by Lewiston architect Harry S. Coombs, it continues to house the town's municipal offices today. It is a fine example of Colonial Revival architecture, representing the town's growth in the early decades of the 20th century, and was listed on the National Register of Historic Places in 1980.

Addison G. Pulsifer was an American architect practicing in Lewiston, Maine.

Miller & Mayo, later Miller, Mayo & Beal, was a prominent architectural firm from Portland, Maine, established in Lewiston in 1907.

The Gridley-Parson-Staples House is a historic house museum at 1554 Farmington Avenue in Farmington, Connecticut. Probably built about 1760, it is the oldest surviving house in northwestern Farmington, and a fine example of 18th century Georgian architecture. It is now home to the Farmington Historical Society, and was listed on the National Register of Historic Places in 1981.

Eugene J. Gibbs (1869–1929) was an American architect in practice in Lewiston, Maine, from 1896 to 1929.

Alonzo J. Harriman (1898–1966) was an American architect in practice in Lewiston and Auburn, Maine from 1928 to 1966.