In 1948, the Andover Organ Company was founded. This company was formed from the Andover Organ Institute. In the beginning, they focused on the restoration and maintenance of mainly mechanical organs, but also of other instruments. In 1959 Andover built one of the first all-mechanical organs in America in a long time. After this, a good reputation was quickly built up in the field of the restoration of historic organs.
| Nieuwgebouwde orgels |
| Année | Ville / Bâtiment | Opus |
| 1958 | Houston, Texas, USA - Rice Institute | |
| 1959 | Lawrence, Massachusetts, USA - Redeemer Lutheran Church | |
| 1960 | Baltimore, Maryland, USA - Mount Calvary Episcopal Church | |
| 1968 | Lawrenceville, New Jersey, USA - Lawrenceville School | 60 |
| 1970 | Northfield, Massachusetts, USA - Mount Hermon School | 67 |
| 1971 | Worcester, Massachusetts, USA - Saint George Syrian Orthodox Church | 69 |
| 1972 | Wellesley Hills, Massachusetts, USA - Unitarian Society | 70 |
| 1974 | Rockport, Massachusetts, USA - First Congregational Church | 74 |
| 1975 | Manchester, New Hampshire, USA - Grace Episcopal Church | 76 |
| 1978 | Rochester, New York, USA - Saint Thomas' Episcopal Church | 82 |
| 1979 | Danville, Virginia, USA - Church of the Epiphany | 83a |
| 1980 | Gettysburg, Pennsylvania, USA - Lutheran Theological Seminary | 84 |
| 1981 | Andover, Massachusetts, USA - Phillips Academy | 85 |
| 1982 | Knoxville, Tennessee, USA - Messiah Lutheran Church | 89b |
| 1983 | Burlington, North-Carolina, USA - First Presbyterian Church | 90 |
| 1983 | Raleigh, North-Carolina, USA - Meredith College | 91 |
| 1984 | Penfield, New York, USA - First Baptist Church | 92 |
| 1985 | Milford, New Hampshire, USA - First Congregational Church | 93 |
| 1986 | San Bernardino, California, USA - Saint John's Episcopal Church | 94 |
| 1987 | Lawrence, Kansas, USA - University of Kansas (Saint Lawrence) | 96 |
| 1987 | Strasburg, Virginia, USA - Saint Paul Lutheran Church | 97 |
| 1989 | North-Andover, Massachusetts, USA - Saint Paul's Episcopal Church | 98 |
| 1990 | Clinton, South-Carolina, USA - Westminster Presbyterian Church | 99 |
| 1988 | Richmond, Virginia, USA - First Presbyterian Church | 100 |
| 1991 | Norwich, Connecticut, USA - Lee Memorial United Methodist Church | 101 |
| 1992 | York, Pennsylvania, USA - Trinity United Church of Christ | 102 |
| 1991 | South-Hamilton, Massachusetts, USA - Gordon-Conwell Theological Seminary | 103 |
| 1991 | Norfolk, Virginia, USA - Old Dominion University | 104 |
| 1993 | Columbia, South-Carolina, USA - Good Shepherd Lutheran Church | 105 |
| 1998 | Orlando, Florida, USA - Saint Michael's Episcopal Church | 106 |
| 1993 | Boxford, Massachusetts, USA - First Congregational Church | 107 |
| 1994 | Milton, Massachusetts, USA - Saint Michael's Episcopal Church | 108 |
| 1996 | Rutland, Massachusetts, USA - Rutland Congregational Church | 109 |
| 1997 | Gettysburg, Pennsylvania, USA - Lutheran Theological Seminary | 110 |
| 1997 | Reading, Pennsylvania - USA - Trinity Lutheran Church | 110a |
| 1999 | Greensboro, North-Carolina, USA - University of North-Carolina | 111 |
| 2001 | Yarmouth, Maine, USA - Saint Bartholomew's Episcopal Church | 112 |
| Werkzaamheden aan bestaande orgels |
| Année | Ville / Bâtiment | Opus |
| 1961 | Orwell, Vermont, USA - First Congregational Church | R1 |
| 1960 | Schuylerville, New York, USA - United Methodist Church | R13 |
| 1963 | Bucksport, Maine, USA - Elm Street Congregational Church | R22 |
| 1946 | Methuen, Massachusetts, USA - Saint George's Episcopal Church | R46 |
| 1965 | Harvard, Massachusetts, USA - Evangelical Congregational Church | R69 |
| 1965 | Haverhill, Massachusetts, USA - Universalist Unitarian Church | R73 |
| 1966 | Wrentham, Massachusetts, USA - Trinity Episcopal Church | R90 |
| 1966 | Nantucket, Massachusetts, USA - Second Congregational Meeting House Society | R93 |
| 1967 | Duxbury, Massachusetts, USA - First Parish Church (Unitarian) | R99 |
| 1967 | Falmouth, Massachusetts, USA - Saint Barnabas' Episcopal Church | R101 |
| 1969 | Methuen, Massachusetts, USA - Methuen Memorial Music Hall | R128 |
| 1972 | North Quincy, Massachusetts, USA - Lutheran Church of the Good Shepherd | R136 |
| 1971 | Bedford, New Hampshire, USA - Presbyterian Church | R138 |
| 1972 | Middleborough, Massachusetts, USA - Episcopal Church of Our Saviour | R146 |
| 1973 | Wayland, Massachusetts, USA - Saint Ann's Roman Catholic Church | R152 |
| 1972 | Greensboro, Vermont, USA - United Church of Christ | R154 |
| 1972 | Wentworth, New Hampshire, USA - United Congregational Church | R155 |
| 1972 | Solon, Maine, USA - Solon Federated Church | R159 |
| 1973 | Lebanon, Pennsylvania, USA - Salem Evangelical Lutheran Church | R161 |
| 1975 | South Dennis, Massachusetts, USA - Congregational Church | R166 |
| 1977 | Acton, Massachusetts, USA - Acton Congregational Church | R169 |
| 1975 | Newburyport, Massachusetts, USA - First Presbyterian Church (Old South) | R173 |
| 1975 | Blue Hill, Maine, USA - First Baptist Church | R178 |
| 1982 | Mount Pleasant, South-Carolina, USA - Presbyterian Church | R179 |
| 1977 | Round Lake, New York, USA - Round Lake Auditorium | R189 |
| 1982 | Wellesley, Massachusetts, USA - United Methodist Christ Church | R194 |
| 1977 | Hallowell, Maine, USA - Sacred Heart RC Church | R198 |
| 1977 | Bridgewater, Massachusetts, USA - FIrst Parish Unitarian Church | R204 |
| 1978 | South Berwick, Maine, USA - First Baptist Church | R209 |
| 1978 | Montpelier, Vermont, USA - Vermont College Chapel | R210 |
| 1978 | Danville, Virginia, USA - Church of the Sacred Heart | R210 |
| 1978 | Lewiston, Maine, USA - Bates College Chapel | R212 |
| 1980 | Warwick, Rhode Island, USA - Pilgrim Lutheran Church | R219 |
| 1980 | Oldwick, New Jersey, USA - Zion Evangelical Lutheran Church | R222 |
| 1982 | Augusta, Maine, USA - South Parish Congregational Church | R226 |
| 2001 | Lamington, New Jersey, USA - Lamington Presbyterian Church | R227a |
| 1998 | Columbia, South-Carolina, USA - Christ the King Lutheran Church | R233 |
| 1982 | Dedham, Massachusetts, USA - Saint Mary Church | R234 |
| 1982 | Milford, Massachusetts, USA - Saint Mary Roman Catholic Church | R236 |
| 1983 | Stonington, Connecticut, USA - United Church of Stonington | R238 |
| 1996 | Lexington, Massachusetts, USA - First Parish Unitarian Universalist | R239 |
| 1981 | Amherst, New Hampshire, USA - First Congregational Church | R241 |
| 1981 | New York City, New York, USA - Trinity Church, Saint Paul's Chapel | R248 |
| 2003 | Medford, Massachusetts, USA - Goddard Chapel of Tufts University | R258b |
| 1991 | Baltimore, Maryland, USA - Westminster Preservation Trust | R259 |
| 1985 | Sandwich, Massachusetts, USA - First Church of Christ | R263 |
| 1985 | Waynesboro, Virginia, USA - First Presbyterian Church | R265 |
| 1997 | Northfield, Massachusetts, USA - Mount Hermon School, Sage Chapel | R267 |
| 1987 | Newton Center, Massachusetts, USA - First Baptist Church | R268 |
| 1988 | North Andover, Massachusetts, USA - Trinitarian Congregational Church | R270 |
| 1987 | Caledonia, New York, USA - First Presbyterian Church | R273 |
| 1989 | Providence, Rhode Island, USA - Cathedral Church of Saint John | R279 |
| 1989 | Manchester, Connecticut, USA - Saint James Parish Church | R284 |
| 2000 | Manchester, Connecticut, USA - Cheney Hall | R290 |
| 1991 | Sherbon, Massachusetts, USA - United Church of Christ (Pilgrim Congregational) | R292 |
| 1995 | Wellfleet, Massachusetts, USA - United Methodist Church | R302 |
| 1990 | Saint Albans, Vermont, USA - Saint Paul's United Methodist Church | R303 |
| 1991 | Westboro, Massachusetts, USA - Good Shepherd Lutheran Church | R311 |
| 1995 | Yarmouth, Maine, USA - First Parish Church | R316 |
| 1994 | Newcastle, Maine, USA - Saint Andrew's Episcopal Church | R318 |
| 1993 | Lexington, North-Carolina, USA - First Presbyterian Church | R320 |
| 1994 | Shrewsbury, Massachusetts, USA - Mount Olivet Lutheran Church | R332 |
| 1994 | Sturbridge, Massachusetts, USA - Old Sturbridge Village | R336 |
| Concord, New Hampshire, USA - Wesley United Methodist Church | R349 |
| 1998 | Hardwick, Vermont, USA - Saint John the Baptist Episcopal Church | R356 |
| 1998 | Baldwinville, Massachusetts, USA - Memorial Congregational Church | R359 |
| 2002 | Stowe, Vermont, USA - Stowe Community Church | R372 |
| 1999 | Ryegate, New York, USA - Ryegate Presbyterian Church | R375 |
| 1978 | Searsport, Maine, USA - First Congregational Church | |
| 1997 | Gettysburg, Pennsylvania, USA - Lutheran Theological Seminary | 84a |
| 1999 | Newport, Vermont, USA - United Church of Newport | |
| 2000 | Williamstown, Massachusetts, USA - First United Methodist Church | |
| North Easton, Massachusetts, USA - Holy Trinity Lutheran Church | |
