Best tools for finding articles in history journals:
America History and Life Indexes journal articles on the history of the United States and Canada. Topic coverage is from prehistory to the present.
Historical Abstracts Indexes journal articles that cover the history of the world (excluding the United States and Canada) from 1450 to the present.
JSTOR A searchable collection of the complete runs (minus the most recent 2 to 5 years) of hundreds of significant scholarly journals.
A complete list of all the history databases that the library subscribes to is here.