The Audio Recordings series contains 2 audiotape reels and 3 compact discs. Including recordings of Donald Mackey and the Renaissance Singers of Montreal in concert and CBC radio programmes.

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 Administration Materials series contains documentation pertaining to the management and chronology of the Renaissance Singers of Montreal.

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 Miscellaneous series contains miscellaneous documentation pertaining to the Renaissance Singers of Montreal. Documents in this series are organised chronologically.