Canada North American Free Trade Agreement, 1992 Oct. 7 Tariff Phasing Descriptions [electronic resource] / Canada - Project Gutenberg, 1993 - Project Gutenberg 89 . Public domain in the USA. Text Subjects--Index Terms: Free trade -- Mexico Tariff -- Law and legislation -- North America Free trade -- United States Free trade -- Canada Foreign trade regulation -- North America Canada. Treaties, etc. 1992 Oct. 7 Free trade -- North America LC Class. No.: KDZ