We have a trial lasting until June 30, 2010 to the the American Antiquarian Society Historical Periodicals. Series 1 includes 550 titles from 1693 to 1820, and Series 2 includes over 1000 titles from 1820 to 1837. Although there are 2 links, once inside EBSCOhost, you can combine the two databases to search them together.
As always, comments on the usefulness of this database for our curriculum and the merits of its contents and search interface are welcome.