FRED – Federal Reserve Economic Data
http://research.stlouisfed.org/fred2/

What is FRED? Short for Federal Reserve Economic Data, FRED is an online database consisting of more than 55,000 economic data time series from 44 national, international, public, and private sources. FRED, created and maintained by Research Department at the Federal Reserve Bank of St. Louis, goes far beyond simply providing data: It combines data with a powerful mix of tools that help the user understand, interact with, display, and disseminate the data. In essence, FRED helps users tell their data stories. The purpose of this article is to guide the potential (or current) FRED user through the various aspects and tools of the database. This will be added to Financial Sources Subject Tracer™. This will be added to the tools section of Research Resources Subject Tracer™. This will be added to Business Intelligence Resources Subject Tracer™.