Find out about the AHA here. Grants should be there someplace.

John, American Historical Review is online, but not free. Check a nearby academic library. Their journal is a 'core' title so most will have it. The 'institutional membership' category is pretty meaningless. We tell our jobber we want a subscription to American Historical Review, they know it's a membership title & 'join' us up. If you want older material, the backfiles are in JSTOR. The AHA membership pages have information about payments for individuals.