Grant Thornton Castellanos Campos & Cia: Auditing and accounting. Describes firm history and organization, with resources on business owners on Latin America. [English/Spanish]
Monetary Integration Law: Information on law making the US dollar the official currency, and allowing contracts in any currency. Mostly in Spanish, summary in English.
Superintendencia de Valores: Regulates securities markets. Includes enabling legislation, resources for investors, and organizational structure.