Identifying and Dating Casavant Organs

Every Casavant name form you meet on a nameplate, a dedication program, or an owner’s web page is a transcription, and the defensible practice is to reproduce it exactly as the source gives it rather than normalize it to one house spelling. The Encyclopedia of Music in Canada states that the firm became a joint-stock company in 1919 incorporated as Casavant Freres Ltee, yet institutional owners render the builder several ways: Boston University writes Casavant Freres, Limited; Community of Christ writes Casavant Freres Limitee; Central Lutheran Church writes Casavant Freres, Lte. These are owner transcriptions, not necessarily the exact legal name at the date of each contract, so a form by itself is neither a date nor a legal identity.

Catalogues add a further layer. On 2 September 2026 a builder-name search for Casavant in the Pipe Organ Database returned twelve builder entities, among them a bare Casavant described as a utility name used when the exact nameplate form is not known, two entities marked as alternate nameplates, a Casavant Freres Ltee. entity, and a separate Casavant Freres entity dated after 1994. Instruments by the one firm are therefore filed under several entities, and no single entity’s record set is the firm’s output.

The corporate sequence comes from the firm’s own published history and from reference works, and every date in it should be read as an attributed statement rather than a registry fact. Casavant’s History page states that the firm was founded in October 1879 in Saint-Hyacinthe by the brothers Claver and Samuel Casavant and operated as a partnership, became the stock company Casavant Freres Limitee in 1919, was a public company between 1963 and 1976, returned to private ownership when Bertin Nadeau acquired it in 1976, and was acquired by Simon Tetreault in 2019. The page is undated, and 2019 is the last ownership event it records. The public-company years of 1963 to 1976 rest on the firm’s own account alone.

Two points in that sequence are given differently by the Encyclopedia of Music in Canada, and both versions belong in any dating note. For 1976 the encyclopedia names the acquirer as the corporate entity La Societe Nadeau Ltee, where the firm names Bertin Nadeau personally. For the 1919 reorganization the encyclopedia states that a phonograph subsidiary, Compagnie de phonographes Casavant Ltee, was incorporated at the same time and dissolved in 1927, while the firm’s own timeline dates its phonograph department to 1919 to 1926. A Quebec business-press profile, itself undated, adds a minority shareholding by the Fonds de solidarite de la FTQ in addition to the 1976 Nadeau acquisition; the profile gives no date for that investment, and the shareholding rests on that single profile.

What a corporate era does for identification is narrow. On the firm’s own account, a nameplate reading Casavant Freres Limitee belongs to the stock company of 1919 onward, so it points to an era. A corporate era is a period of legal or ownership form, not a period of construction practice, and it says nothing about what the instrument contains.

Casavant Freres and Orgues Letourneau are separate firms that happen to share Saint-Hyacinthe. Each publishes its own founding date and its own address: Casavant dates its founding to October 1879, Letourneau to January 1979. A shared city and the movement of individual craftspeople between the two firms are not evidence of any corporate relationship. Letourneau’s own history records that Fernand Letourneau took an apprentice voicer’s position at Casavant in February 1965 before launching his own enterprise, and that is the employment history of one person, not a succession, license, or shared design lineage. State each firm’s identity from its own sources.

The practical consequence is that a bare opus number is ambiguous between them. Both firms run independent opus series beginning at 1: Casavant’s runs from opus 1 in 1880 to at least opus 3920, and Letourneau’s runs from opus 1 in 1979 to opus 143 as published on 2 September 2026. A reference such as opus 63 or opus 118 identifies nothing without a builder name. On present published evidence the ambiguity is real in the band from 1 to 143; above 143 only Casavant is implicated.

An opus number places an instrument between two published milestones of a single continuous series; it does not deliver a year. Casavant’s own timeline runs from opus 1 in 1880 to opus 3905 in 2013, and a trade-press news item describes opus 3920 at a concert hall in Fuzhou, China. That timeline is a selection of milestones rather than a complete opus list, and the continuity of the series between the listed points is implied by the timeline rather than demonstrated by it.

Where the timeline pairs a number with a year, the pairing is usable as an anchor. It lists opus 63 as the firm’s first United States installation, at Holyoke, Massachusetts, in 1895, and the Dictionary of Canadian Biography separately dates the start of the firm’s exports to the United States to 1895, though neither reproduces a contract, shipping record, or installation certificate. Between such anchors a number gives a range and nothing tighter.

A second opus number on the same project is documented, and the published records disagree about what it denotes, so it cannot be read by rule. The firm’s own timeline lists opus 1587-1588 for a 1938 installation in Lewiston, Maine and opus 3812/3813 for a 2001 installation at Central Synagogue in New York, and a rebuilder’s project record for Grace Episcopal Church describes a 1922 Casavant acquired as opus 940, 941. None of these sources explains the numbering convention.

The three cases resolve three different ways. For Lewiston, a 2017 local newspaper feature describes opus 1587 and opus 1588 as two complete, physically separate organs, a small sanctuary organ and a large gallery organ, both playable from one shared console. For Central Synagogue, a documentation page maintained by the New York City chapter of the American Guild of Organists shows opus 3812 as a small Bimah organ dedicated in September 2001 and opus 3813 as a larger Gallery organ dedicated in April 2002, both controlled by one movable console. For Grace Episcopal, the rebuilder states that opus 940 and 941 apply to a single instrument, the second number designating its antiphonal divisions. Two separate organs installed together, two organs completed in stages, and one organ with a numbered division are three different meanings, none of them taken from a reproduced Casavant contract, and each paired number needs its own documentation.

An opus number missing from a page is a property of the page, not proof that the instrument has none. Casavant’s December 2020 announcement of its first Inspiration Organ in the United States, in the restored Crawford Chapel at Rye Presbyterian Church, Rye, New York, identifies the instrument by the designation II-24/9 rather than by an opus number; the announcement does not say whether an opus number was also assigned, and although the form appears to denote two manuals, 24 stops, and 9 ranks, the announcement does not decode it. At the other end of the scale, the University of St. Thomas in Minnesota publishes a Casavant Freres practice instrument in its Brady Education Center with a full stoplist but neither an opus number nor a build date. Silence on an owner’s page is the point at which the next step becomes a record rather than a reading.

A published count of instruments built is not the opus number reached, and neither reference work that publishes such counts says the two coincide. The Encyclopedia of Music in Canada gives cumulative output milestones of 100 instruments by 1899, 200 by 1904, 500 by 1912, 600 by 1914, 1,000 by 1923, and 1,355 by 1929; the Dictionary of Canadian Biography records that production peaked at 55 organs manufactured in 1929 and that employment grew from 3 in 1880 to about 250 in 1929. Those figures describe the scale of the works. Do not convert a milestone total into an opus position, or an opus position into a rank in the firm’s output.

Instruments from the South Haven branch plant are Casavant Freres instruments; the branch was an operation of the same firm, not a separate maker. The Dictionary of Canadian Biography states that Casavant operated the branch plant in South Haven, Michigan, from 1912 to 1918 to avoid high tariffs, and the Encyclopedia of Music in Canada states that 52 instruments were built there in those years under a manager, Joseph Pepin, a former Saint-Hyacinthe employee. The Pipe Organ Database files the branch as a separate builder entity, Casavant Brothers, and its own note for that entity reads ‘Branch factory of Casavant Freres Ltee. in South Haven, Michigan 1912-1918’.

What South Haven does not give you is a rule. Neither reference work gives the opus numbers built there, and neither states whether South Haven instruments carry a distinguishing plate, mark, or separate number series. That question is unresolved, so a nameplate form or an opus number should not be read as proof of a South Haven origin, or as proof against one.

Once another firm has worked on an instrument, the name and the number in front of you may belong to different campaigns, and the reading has to separate them. Andover Organ Company records the rebuilding of a 1936 Casavant Freres organ, opus 1531, at St. John the Evangelist Church in Wellesley Hills, Massachusetts, as its own Opus R-435; the instrument keeps its Casavant identity while carrying a second firm’s opus number, and the record is undated. A broadcast profile of the organ at St. Andrew Lutheran in Mahtomedi, Minnesota is headed ‘1927 Casavant; 2001 Schantz organ, Opus 1177’, while a separate listing for the same instrument gives it as Casavant Opus 1177 of 1927 with a Schantz renovation in 2001, so the opus number in that heading belongs to the original builder, not to the firm named immediately before it.

Composite names go further. At St. James United Church in Montreal an independent Quebec documentation site and a dated trade-press feature together record four builder campaigns on one instrument: E. D. Wadsworth & Bros under a June 1888 contract, the Warren Church Organ Company from November 1908 reusing most of the Wadsworth pipes, Casavant Freres under a July 1938 contract as opus 1608 reusing almost all of the earlier pipework, and Orgues Letourneau in 2011 and 2012. One instrument can carry four builders’ work; that case establishes the possibility, not how common it is. Letourneau’s own published list of rebuilds and restorations names Casavant Freres as the original builder in eight of its eighteen entries and a composite Wadsworth-Warren-Casavant Freres in a ninth, so a Casavant nameplate may sit on an instrument containing another firm’s later work; that list records only Letourneau’s projects and says nothing about how often Casavant instruments are rebuilt in general.

A build date and an opus year identify when an instrument was first built; they do not identify the mechanism generation of the parts it contains today, because later campaigns replace fabric. Two 2023 news reports on a Casavant organ of about 1913 in the former Third Avenue United Church in Saskatoon state that the instrument underwent major repair campaigns in the 1950s and again in the 1980s, to the point that, in the later report’s words, very few parts of the original 1913 organ remain. Neither report names the firms that did the work or the components replaced, and both are general-interest journalism rather than a technician’s inspection, so the case stands as a caution against dating by opus year alone, not as a rule for every Casavant instrument of that era.

Console appearance does not date an instrument, because a modern console can be a deliberate copy of an earlier style. The builder-supplied cover feature on Casavant opus 3837 of 2005 at Brick Presbyterian Church in New York City describes a console with terraced stop jambs of mahogany and oblique stopknobs of rosewood and pao ferro patterned after those Casavant built in the late nineteenth and early twentieth centuries; read from its console alone, a 2005 instrument would look decades older than it is. A separate trade-journal feature makes the other half of the point: console shells were mass-produced during the 1940s through the 1960s, so a trained eye can tell a Casavant of that period from an M. P. Moller by shell and layout, while more recent consoles are typically custom-built. Shell style is at most a builder signal for one period, offered by that source as a matter for a trained eye rather than an owner-usable method, and it is never a year.

Action type is not a dating rule either, and this page does not take it up; how Casavant’s key actions and windchests changed by period, and what that does and does not say about one organ, are explained on Casavant Action and Windchest Generations.

Read the free text of a database builder record before its structured fields, because the two can disagree inside the same record. The Pipe Organ Database, read on 2 September 2026, carries a Casavant Freres Ltee. entity whose note reads ‘Saint-Hyacinthe, Quebec 1879-1994; after 1994 as “Casavant Freres.”‘ while its structured range shows Active 1887-1994, and a separate Casavant Freres entity noted ‘Saint-Hyacinthe, Quebec, Canada, after 1994’ with Active 1994-Present. The 1879 of the note and the 1887 of the structured field sit side by side in the database’s own record; both are reported here and neither is preferred, and the firm’s own history dates its founding to October 1879.

This is general behavior of that database’s builder records, not a quirk of the Casavant entries. As of 1 September 2026 the Type field applies the value Builder both to corporate firms and to individual people, the Active range is frequently Unknown at one or both ends even where the record’s own description states explicit dates, and an Active range ending in Present is not evidence that the entity currently operates. Treat a Type value or an Active range as an index term, and take a firm’s identity and dates from the record’s note and from the firm’s own attributed history.

When a name form, a number, and a catalogue entry have all been read and the answer is still a range, the next step is documentation rather than further inference; where Casavant’s own records and independently held material can be sought is covered on Finding Casavant Opus Records and Factory Documentation.