The Programmes and Scripts series contains programmes of Donald Mackey and the Church of Messiah and the Renaissance Singers of Montreal in performance; as well as scripts and programming for the following series presented/performed by the Renaissance Singers: CBC broadcasts not in a series, Christian Frontiers, Sunday Chorale and Good Friday.

The Clippings series contains newspaper clippings of publicity, articles and reviews concerning performances, broadcasts and recordings of the Renaissance Singers of Montreal.
*N.B. other clippings and reviews can be found in the Administrative Materials series.

The Scores series contains copies of various scores of works performed by the Renaissance Singers of Montreal. Additional information provided where possible.

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.