- United States@ (10)
- www.iaao.org
- The Canadian Tax Foundation is an impartial, non-profit tax research organization analysing personal, corporate, and international tax and government finance matters.www.ctf.ca
- The National Timber Tax Website is a comprehensive resource on the tax treatment of timber, developed to be used by timberland owners, accountants, attorneys, consulting foresters, and other professionals who work closely with timberland owners.www.timbertax.org