By services, 22 July, 2022 13 September 1990 Income Tax Severed Letter ACC9657 - Averaging for Farmers
By services, 22 July, 2022 11 January 1990 Income Tax Severed Letter AC58460 - Non-profit Corporation for Scientific Research and Experimental Development
By services, 22 July, 2022 9 May 1989 Income Tax Severed Letter 5-7189 - [Canada-U.S. Income Tax Convention (1980) (the "Treaty") Article XIII, Paragraphs 2 and 4 Disposition of a Partnership Interest]
