We recently added The New Palgrave Dictionary of Economics to our online collections.

The four-volume The New Palgrave: A Dictionary of Economics, edited by John Eatwell, Murray Milgate and Peter Newman, was first published in 1987 to international acclaim.In 2008, Palgrave Macmillan published The New Palgrave Dictionary of Economics, 2nd edition, edited by Steven N. Durlauf and Lawrence E. Blume. While some classic articles from the original 1987 edition were retained, around 80% of the text was either entirely new or substantially rewritten to reflect the depth of change within the discipline between the editions.
