The American Historical Association provides this page of information on graduate studies: AHA: History Doctoral Programs: Questions to Consider.
Professor Ken Lockridge of the University of Montana gives this advice on how best to prepare for graduate school during your undergraduate studies: Ken Lockridge’s Advice.
This page from the University of Florida likewise advises undergraduates on how to approach graduate school in history: Career Opportunities and Graduate School.
Professor Belle Tuten of Juniata College provides this page of advice on considering graduate study in history: Advice for Grad School.
Ohio State University (Columbus) (MA and Ph.D.)
Ohio University (Athens) (MA and Ph.D.)
Miami University (Oxford) (MA and Ph.D.)
Wright State University (Dayton) (MA)