This series contains Hellmuth Wolff’s correspondence files. Subseries i contains correspondence between Wolff and various organ builders in English, French and German, primarily related to Wolff’s editorial work for the for the International Society of Organbuilders’ ISO Yearbook 1993, which spanned four years from 1992-1996. Subseries ii contains workshop documents, including opus lists.

The Correspondence Series contains letters to or by Julius Schloss to the listed individual, except where noted. Additional correspondence pertaining to other series in the collection is listed below as well.

This series consists of copies of the correspondence with agencies and others concerning Sonde musical pieces, performances and recordings.

The Correspondence series contains cards and letters to or from Paul Pedersen.
The series is arranged chronologically by time period as indicated. The series includes correspondence of special note to and from Murray Adaskin, István Anhalt, John Beckwith, Helmut Blume, G. C. B. Cave [Gene Cave-Browne-Cave], Mary Cyr, Joan E. Foley, Robert S. Prichard, Charles Reiner, Edward Schreyer (Governor General of Canada), R. M. Schoeffel (University of Toronto Press), John Weinzweig, etc. Additional correspondence, detailed in other Finding Aid series, is also listed below.

The Correspondence series contains cards and letters to or from Donald Mackey and the Renaissance Singers of Montreal. The series is arranged chronologically by time period as indicated. The series includes correspondence of special note from Reverend Brian D. Freeland of the Canadian Broadcasting Company.

The Correspondence Series contains letters to or by Charles Reiner, in addition to correspondence about him or pertaining to his career. Arranged chronologically by time period as indicated.

Three volumes of choral sheet music from the Choir’s library were donated to McGill University by the Estate of D. Torrance Fraser, a former choir member, in 1926. The pieces in these three volumes are second copies of those pieces found in Series 1. In 1927, another volume of sheet music from the Choir’s library was donated to McGill University by the Estate of D. Torrance Fraser. This fourth volume (DTF2) contains many pieces not found in the other volumes.

This series consists of two CD-Rs, which contain Series 1 and much of Series 1-5, respectively, with some additional material. The total number of items is 512.

This series contains a variety of photographs, correspondence and scrapbook items related to Donald Mackey and the Renaissance Singers. Notes on several items suggest that the owner of this material was Helen Mackey. Please see the Donald Mackey Collection and accompanying finding aid at http://www.mcgill.ca/library/find/subjects/music/special/donald-mackey-collection for related material.