Some of us may remember the handy and free resource called JAKE that allowed you to look up indexing and full text access information for a given periodical. JAKE is now defunct, but you can find similar info (though not as detailed) in Ulrichs.com.
There is now another free tool online-this one courtesy of the librarians at Simon Fraser University--that seems to do the same thing JAKE used to: CUFTS. You can find the journal look up feature for CUFTS at http://cufts.lib.sfu.ca/tools.shtml
One particularly neat trick that CUFTS can peform is a side-by-side comparison of journal access in different databases, which can be done here on the CUFTS site.
For more info on CUFTS, here's the PDF of the slides from a presentation about it given by Simon Fraser librarian Kevin Stranack about it.