Composite Pipe Organs: Original Builder, Rebuilder, and Attribution

An opus number identifies a place in one firm’s own list of jobs, and an American firm may assign a number from that list to work on an instrument another firm built. The number tells you which firm counted the job, not which firm built the organ. Several documented Schantz rebuilds of instruments originating with other builders carry Schantz opus numbers, among them 2151, 2161, 2338 and 2343. Those examples support caution that a Schantz number may identify a Schantz project rather than the original builder; they do not establish a universal numbering policy for Schantz or for any other firm.

A maker’s mark on a console, a windchest, a blower or a rank of pipes identifies the maker of that component. Organbuilders buy components from supply houses, and a supply house’s mark identifies a source for that component; it does not by itself establish who purchased or installed it. The material itself is no better a guide. Organ Supply Industries states that its wood pipes are available in most wood species and to custom scales, and A.R. Schopp’s Sons states that it does not publish alloy percentages and handles specification on a project-specific basis. Read together, those statements from the suppliers’ own literature mean a supply-house pipe’s species, scale or alloy will not tell you which organbuilder installed it. Record the mark as its own layer and set it beside the other evidence rather than above it.

A firm’s name is not stable enough to serve as a test of identity on its own. The Encyclopedia of Music in Canada states that Casavant became a joint-stock company in 1919 incorporated as Casavant Freres Ltee, while institutional owners and databases render the firm as Casavant Freres, Casavant Freres Ltee, Casavant Freres Limitee and Casavant Freres, Limited. The organ pages of Boston University, the Community of Christ and Central Lutheran Church each render it differently, and those are owner transcriptions rather than the exact legal name at the date of each contract. A current firm shows the same pattern: Orgues Letourneau appears as Letourneau Organs Inc. on its own contact page, Orgues Letourneau, Ltee. in Diapason announcements, Letourneau Pipe Organs in the Associated Pipe Organ Builders of America member listing and Orgues Letourneau Limitee in its own social-media identity, all at one Saint-Hyacinthe address. None of those sources says which form is the registered legal name.

Places are an equally weak proxy. The Dictionary of Canadian Biography records that Casavant Freres operated a branch plant at South Haven, Michigan, from 1912 to 1918 to avoid high tariffs, and the Encyclopedia of Music in Canada records 52 instruments built there in those years under a manager who had come from Saint-Hyacinthe. Neither source gives the opus numbers built at South Haven or says whether those instruments carry a distinguishing plate, mark or number series, so that question stays open.

People are no better. Orgues Letourneau’s own published account states that Fernand Letourneau began as an apprentice voicer at Casavant Freres in February 1965 and studied European organ voicing techniques in 1978 before launching his own enterprise, and James B. Hartman, writing in The Diapason, records that he apprenticed at Casavant with his uncle Jean-Paul Letourneau, then head reed voicer. That is the employment record of one individual. Casavant Freres and Orgues Letourneau are separate firms with separate founding dates, ownership histories and addresses in the same city, each to be identified from its own sources. A shared city and the movement of craftspeople between them establish no corporate relationship, succession, license or shared design lineage.

A register can hold several records for one physical organ because it records each campaign of work separately. The Organ Historical Society Pipe Organ Database represents a rebuilt instrument by creating a separate record whose primary heading is the rebuilding firm and its opus number, with a line of the form ‘Originally [original builder] (Opus [number], [year])’ beneath it, and it links the successive states of an instrument through a ‘Linked revisions’ panel and a ‘Related Instrument Entries’ cross-reference. The heading gives the rebuilder primacy and the original builder second place; the ‘Originally’ line, which is populated on rebuild records, is what distinguishes a rebuilder’s opus number from the opus number of a new instrument.

For the same reason, the firm named first on a Pipe Organ Database record should not be assumed to be the original builder. As of September 1, 2026, the first-line attribution may identify later work, an owner or an unknown-builder placeholder, so the ‘Originally’ line, the revision chain, the work label, the notes and the related entries all have to be read before the record is understood. The notes are where a record says in plain language what it represents. Three such records read, respectively, ‘This entry represents the rebuilding of an existing organ with a new solid state relay’, ‘This entry represents tonal additions to an existing organ and a new relay’ and ‘This entry represents the rebuilding of the console and tonal additions to an existing organ.’ A record is an entry for a piece of work, not a verdict on the whole instrument.

When two records disagree about one organ, there are at least two possible explanations. They may describe different pieces of work at different times, in which case both are right about what they record. Or one of them may be wrong. A disagreement by itself does not tell you which, and it should be carried as unresolved until other evidence settles it.

One physical instrument originating as Reuter Organ Co. Opus 1368 is represented in the Pipe Organ Database by four cross-linked records carrying four builder-and-opus identities: Reuter Opus 1368 (1962, AGO Convention, Houston), Reuter Opus 1368 (1963, Northminster Presbyterian Church, Indianapolis), Schantz Organ Co. Opus 2197 (2001, Northminster) and Peragallo Pipe Organ Co. Opus 772 (2022, St. Malachy Catholic Church, Brownsburg, Indiana). Within that chain the Peragallo record gives the original instrument’s year as 1962 and the Schantz record gives 1963. Both dates stand with their own records; neither is corrected here, and the difference could reflect two different events or an error in one entry.

The same chain shows a record disagreeing with itself. The Schantz Opus 2197 record states that Schantz rebuilt and enlarged the Northminster instrument, adding eight ranks, installing a new console and converting the switching to multiplex on the existing Reuter; a note on the linked Reuter record dates that work to 2000, while the Schantz record’s opus year is 2001. The two linked Northminster records also carry opposite extant-and-playable status flags, and the Reuter record’s flag contradicts a dated note on that same record. A status flag is not a current-status claim until the notes and the linked records have been read. This is one documented instance on two linked records; how often such contradictions occur across the database has not been measured.

The register and the owning institution can also present one instrument under different identities. The Pipe Organ Database heads the Severance Hall, Cleveland record as Schantz Organ Co. Opus 2151 of 2000, originally Skinner Organ Co. Opus 816 of 1929, and the Rockefeller Chapel record at the University of Chicago as Schantz Organ Co. Opus 2274 of 2007, originally Skinner Organ Co. Opus 634 of 1927, while the owning institutions publish both instruments under their Skinner opus numbers. Neither presentation shows both numbers. A further split runs through the Skinner name itself: on the University of Florida Chapel-Auditorium record, headed M. P. Moller Opus R-105 of 1980, the structured original-builder line names Skinner Organ Co. for Opus 501 of 1924 while a contributor note on the same record names E. M. Skinner, and the structured field and contributor note use different name forms; verify which entity and period each intends.

Builder records carry the same kind of internal disagreement. The Pipe Organ Database keeps separate builder records for successive corporate names of one firm and places the era boundary in a free-text ‘Distinction’ field rather than in the structured ‘Active’ dates. The Reuter Organ Co. builder record states, from David H. Fox’s A Guide to North American Organbuilders (Organ Historical Society, 1997), that the firm succeeded the Reuter-Schwarz Organ Co. and was established by Adolph C. Reuter at Lawrence, Kansas in 1920 on the withdrawal of Earl C. Schwarz, and that Franklin Mitchell and Albert Neutel Sr. acquired it in September 1980. On both the Austin Organ Co. and the Reuter Organ Co. builder records the structured ‘Active’ dates contradict the Distinction and note fields on the same page. A corporate-era boundary drawn from one field of one record is not yet a boundary; read every field and carry each statement with its source.

A missing record proves only that the resource you consulted does not describe the instrument, number or record you were looking for. An organ database and an archive finding aid each cover what their contributors have entered, and a gap in either is a gap in coverage, not evidence that the thing never existed. Report the negative search as a negative search, name the resource and the date, and keep looking in the resources the first one does not cover.