Commodities - Financial Data

Bloomberg
Real time and historical financial information on commodities, including prices, futures and options. Hit CMTDY <go> when on the terminal. There are five Bloomberg terminals in the Stamps Reading Room and three Bloomberg terminals in the Exchange. Individual accounts required. Please see the More Info page for account set up information. 

Global Financial Data 
Includes current and historical data. Login anonymously and click on the GFDatabase. Use the Series drop-down to find Commodity Indices, Commodity Prices and Futures Contracts.
 

CME Group
CME publishes economic white papers covering topics and trends driving current commodity markets. 

UN Commodity Trade Statistics provides trade data, while the UNCTDAD Commodity Price Statistics has annual and monthly data for agricultural and mineral commodities.

USDA Foreign Agricultural Service PS&D (Production, Supply & Distribution)  
Provides both data and monthly analysis on agricultural commodities.   

U.S. Geological Survey - Mineral Information 
Includes statistics and information on the worldwide supply of, demand for, and flow of minerals and materials essential to the U.S. economy, national security, and protection of the environment.

World Bank 
Publishes the Quarterly Commodity Market Outlook providing analysis and forecasts for major commodity groups -- energy, metals, agriculture, precious metals, and fertilizers.

News

Factiva - Current news on the commodities markets from a variety of sources (including Barron's, Wall Street Journal, Dow Jones, New York Times, etc.). 

Financial Times: Commodities -  Need access? Sign up for an FT account here.

Reuters: Commodities News

CRB Commodity Yearbook
Available in print: Ref. HF1040 .C7 in the Stamps Reading Room
Features historical commodity prices and a brief analysis of various commodities.