Global Financial Data offers downloadable financial data series.

Check out Datastream (see access details).

Try WRDS (see access details) for large data extracts:

• Open IHS Global Insight for regional, national, and industry economic data.
• Open OptionMetrics for U.S. equity and index options markets.

Explore government tools:

• UNCTADstat (United Nations Conference on Trade and Development)  provides free market commodity prices (including indices) starting from 1960. Select Data Center > Commodity Prices.
• USGS (United States Geological Survey) Commodity Statistics and Information reports on nonfuel mineral commodities.
• The USDA (United States Department of Agriculture) Economic, Statistics and Market Information System offers agricultural commodity market data and outlooks.

Use Bloomberg (see access details):

• Type BMAP and hit the <GO> key to plot mines and mining sites (for gold, coal, metals, etc.) as points on a map.
• Type CRR and hit the <GO> key to rank commodity indexes.

In ​Mergent Archives, select CRB from the left menu to access the Mergent Commodity Yearbook with data starting from 1939.

Global Commodities: Trade, Exploration & Cultural Exchange provides a history of certain commodities.

The World Bank publishes data and analyses of Commodity Markets and Global Economic Prospects.