Includes sketches and autographs as well as various printed drafts (some with Reiner’s editorial markings) and final printed copies. "Evocation" initially entitled Petite Prelude pour Flute Solo.

The Donald Mackey Collection consists of the Donald Mackey and Renaissance Singers of Montreal complete portfolio of CBC broadcast programmes and scripts. In addition, the fond contains documentary artifacts including correspondence, concert programmes, photographs, audio recordings and special projects that chronicle Mackey’s career as conductor of the Renaissance Singers of Montreal and his life in Montreal. This includes information about his professorship at the faculty of music of McGill University, his active involvement in Montreal’s vibrant church music scene as organist and conductor, his appointment as University Organist Emeritus, etc.

The Correspondence series contains cards and letters to or from Donald Mackey. The series is arranged chronologically by time period as indicated. The series includes correspondence of special note to/from Rev. David R. L. Clarke, Prime Minister of Canada Pierre-Elliot Trudeau, Alfred Whitehead and Healy Willan.

The Biographical Information series contains divergent materials, all relating to Donald Mackey’s personal or professional life. The series includes his thesis and writings, lectures, and other miscellaneous personal documents. The series is arranged chronologically by time period as indicated.

The Scripts and Writings series contains writings, lectures and talks by Donald Mackey; as well as documentation pertaining to special projects organized and carried out by Donald Mackey (i.e. organ installations and events). The series is organized chronologically.

The Concert Programmes series contains programmes of concerts performed and/or attended by Donald Mackey. The series is organized chronologically, by subject as indicated.

The Photographs series contains photographs of church organs, professional photos of Donald Mackey alone and with others. Also includes correspondence from Helen Mackey to Cynthia Leive.