the NRC is coming out with a new list of rankings sometime this year (the summer?).
here's a link to their list from 1995, the last time they provided a ranking:
http://www.stat.tamu.edu/~jnewton/nr...c41.html#area8
(do a ctrl+f for "history")
i was going to put up the results from us news and world report, but besides probably being illegal, there are just too many damn specialties. the categories are african history, african-american history, asian history, cultural history, european history, latin american history, modern us history, us colonial history, and women's history.
i can get ya the top ten for any of those. (the top 25 for just "history" is, imo, useless. for example, when considering the top ten physics schools for me, what mattered was how they ranked in condensed matter. their strengths in any other field are completely irrelevant.)