The mission of this site is to make available to the public the highest quality and most reliable historical data on important economic aggregates, with particular emphasis on nominal measures.
The data have been created using the highest standards of the fields of economics and history and are rigorously refereed by the most distinguished researchers in the fields. Beginning with the United States and United Kingdom and continuing with Japan and China, we will continue to add series from other countries under the same high standard.
The site provides calculators for the historical relative value of money in various currencies as well as for measuring historical changes in purchasing power, savings growth, inflation rates, as well as daily closing values for the Dow Jones Industrial Average dating back to 1896. Plus more statistics and calculators.
Rigorously researched, this site is a great place to find historical economic data, especially if your library does not have access to historical Wall Street Journal issues and data.