JSTOR specializes in making available the back issues of journals in a wide variety of humanities and social science disciplines. Issues are available both as images and as text, making searching possible both within each title and across the whole database. Ebooks are also available.
Includes international economic and stock data back to 1600's in some cases. It also has Events in History which can be used to help explain erratic market behavior through time. Search by things like Pandemics, Earthquakes and other events.