BISD. Basic Instruments and Selected Documents and BISD Supplements. Geneva: Contracting Parties to the GATT, 1952-98 (covering 1947-95).
Microfiche GATT/WTO Documents. Geneva: WTO, 1947-96. This very large collection of microfiche documents covers from the negotiation of the GATT and the Havana Charter through 1996. It has very few Uruguay Round (MTN/...) documents. The fiche is accessible via a hardcopy index of subjects, document symbols, product names, country names, and articles of the agreements. You could also search the online collections to identify relevant documents. The fiche and the index are located in the Media Center.