While the databases America: History & Life and Historical Abstracts are the primary indexes of journal articles in the field of history, scholars interested in environmental history may also want to seach in Environmental Index, and interdisciplinary database dedicated to all things environment.
The following are databases that specifically cover gender, sexuality and women's issues. Many other library databases will cover aspects of women's studies within particular disciplines.
So you have an article in your hands, and you've already raided the bibliography for citations. But these are all older sources the author used. How do you know who cited this article? Try one of the following search tools to find "future" sources that cite the article you already have.