Series consists of manuscript drafts and fragments from Dr. Mayr's novels: Moon Honey (1995 NeWest Press), The Widows (1998 NeWest Press), Venous Hum (2004 Arsenal Pulp Press) and Monoceros (2011 Coach House Books). Series includes handwritten, typescript and digital drafts with edits comments, feedback and correspondence with editors including Nicole Markotic, Rosemary Nixon, Nancy Jo Cullen and Aritha van Herk. Contents include assorted research materials and correspondence with the presses that published her works.

Series consists of performance and venue contracts with various musical groups and individuals for services provided to Pro Musica Canada. Includes legal and financial documents, itineraries, biographical information and press clippings, concert programs, photographs of performers and related correspondence.

Series consists of materials related to the finances of the Pro Musica Society including tax information, fundraising and grant information and related correspondence.

Series consists of records related to the registration and administration of the Society. Records include legal correspondence on registration, annual returns and audit reports, and Board meeting minutes and accompanying materials.

Box consists of typescript drafts of various speeches and talks presented by Brennan. Includes copies of speeches and other materials from Historic Calgary Weekly Fundraiser: Fort Calgary, Historic Calgary Week: Memorial Park Library, Calgary Public Library: Centennial VIP Book Launch, History Day at Heritage Park: "Alberta Scoundrels".

Series consists of typescript copies of various public-speaking presentations given by Brennan.

Box consists of drafts, research materials, correspondence and copies of articles by Brennan used for his book of historically significant biographies: Boondoggles, Bonanzas and Other Alberta Stories. Includes chapters on Rainmaker of Medicine Hat (Charles Hatfield), All Hell for a Basement (Rudyard Kipling), Alberta Acquires Unusual Art, Coal mining (Union Strike Blairmore), Father Lacombe, Last Chance Well (Leduc), Watchdog Ousts Edmonton Mayor (Leger), Goldmine in the Rockies, Compensation for Sterilization (Leilani Muir), Notley Plane Crash, Calgarians Flee Mock Bomb Attack, Principal Group Collapse, Black Oil Mined From Grit, the Mountain that Walked (Frank Slide), Klein Becomes Mayor.

Box consists of typescript draft (2003), research materials, correspondence and copies of articles by Brennan used for his book of historically significant biographies: Boondoggles, Bonanzas and Other Alberta Stories. Includes chapters on Lonely Bachelors of "Dinosaur Valley", Sarah Bernhardt, AIDS virus, Waterton Lakes Oil Boom, Flying Manure Bomber, Tower Rises in Calgary, Chautauqua in Western Canada, Canmore Woman Conquers Everest, Alberta's Aviation Pioneers, Eagle of the Winter Olympics, In the Eye of the Tornado, Stampeding Circus Elephants, Jack the Ripper in Calgary, Folk Festival Fever, Gretzky Goes to Hollywood, Calgary Wins First Grey Cup, Warships of Ice.