RIA - Westlaw: RIA-TREATIES (current) - treaties between the U.S. and others with legislative histories and editorial explanations (combination of RIA International Tax...
Brederode, R. F. W. van (2009) - LES
ed. by Roy Bahl, Jorge Martinez-Vazquez, and Joan Youngman (2008) - UES
Tax Analysts - Lexis: WWFRCE (1910-current) - treaties that are currently in force organized by country and subject matter (i..e. coffee, sugar, etc).
Tax Analysts - Lexis: TAWTT (1828-current) - worldwide tax treaties and U.S. legislative histories; many English translations.
Tax Analysts - Lexis: WWCASE; cases from over 50 countries interpreting treaty cases
Tax Analysts - Lexis: WWPROC file (1950-current) - more than 150 tax treaties as amended by protocols, exchanges of notes, etc. (treaties in file and current form)..
United Nations (1995-current) - L1.
Tax Analysts (1998) - UES