File includes the various documents relating to Northway's academic career, finances, Neathern Trust, Windy Pine, and ownership of 265 Rosedale Heights:
- Mary Northway's academic transcript, University of Toronto
- Northway and Co. valuation and reports
- Mary Northway's personal reflections on her life
- Investment agreements
- March Agreement form with Canada Permanent Trust 17 September 1963
- Northern Trust indenture 22 July 1968
- Deed and survey map of 265 and 267 Rosedale, Toronto,
- Windy Pine: Deeds of three Crown Land lots in Stanhope Township, Haliburton County
- Grant of Easement for distribution lines to Hydro-Electric Power Commission of Ontario.