U.S. Court of Internatioanl Trade - Lexis: USCIT (1980-current)
Official site with laws and regulations established by the Taiwanese Ministry of Justice. In Chinese and English.
Lang, Michael, ed. (2003) - UES (discussion of treaty interpretation in a dozen or so countries
A comprehensive sources that covers most countries of the world.
RIA - Westlaw: RIA-TAXTEX (current) - annotated analyses of treaties between the U.S. and other countries with citations to cases and rulings.
This Government website provides a list of all the treaties that are in force and are applicable to the Hong Kong SAR. Most of the treaties on our list applied to Hong Kong...
Tax Analysts - Lexis: WWFRCE (1910-current) - treaties that are currently in force organized by country and subject matter (i..e. coffee, sugar, etc).