hmmm, no idea about history... for my purposes, JSTOR is far from complete, relatively often i need stuff from elsewhere, actually i usually search on scholar.google.com they already provide weblinks (including jstor) but (though they are decent, they) could be better at searching within abstracts (but it has some useful features, too, such as containing lots of working papers or providing citation histories...), so sometimes i use a specialized database (which won't help you too much) which contains more details about the articles; but, again, no idea what you are looking for; guess the stuff where it is embarrassing if you don't cite it should be in JSTOR