Series consists of manuscripts by Henry Drake Petersen recording his thoughts on several topics. Some copies of Petersen's correspondence to friends are included. Seven architectural drawings of a house Petersen planned and hoped
to build in Lake Ainslie, Cape Breton, after retirement are included in this series.

Series contains letters Andrew Merkel wrote in hopes of securing recitals for Wilson MacDonald; related newspaper clippings, telegrams, receipts, leaflets, essays, draft manuscripts; and personal correspondence between Merkel and MacDonald.

Series consists of 24 letters William Willcox Perrin wrote to Rowley, his friend Mackenzie and others.

1 letter written by William Ridley to another Anglican clergy member.

Series consists of one letter sent by Clark to Rowley.

Series consists of 32 letters William Lennox Mills wrote to Rowley and others.

Series consists of five letters William John Bum wrote to other Anglican clergymen.

Series includes correspondence between William Marshall and Andrew Merkel discussing Marshall's writing; also includes his obituary.

Series consists of four letters William Day Reeve wrote to others

Series consists of 18 letters William Cyprian Pinkham wrote to other Anglican clergymen and Rowley.