Journal Storage Project (JSTOR)
This organization is not a publisher per-se, but a project to put back
issues of key journals in various fields on-line for easy access. All
of these journals are available with a "moving wall" of 5 years (that
is, all issues from the founding of the journal to 5 years ago are
available).
In economics, the journals are
American Economic Review
Econometrica
Economic Journal
Journal of Applied Econometrics
Journal of Economic History
Journal of Economic Literature
Journal of Economic Perspectives
Journal of Industrial Economics
Journal of Money, Credit and Banking
Journal of Political Economy
Quarterly Journal of Economics
Review of Economic Studies
Review of Economics and Statistics
Site licenses for JSTOR are available for universities and other
organization (there are some 500 participants now around the world),
and a method for individual subscriptions is in testing.
http://www.jstor.org/