If you searching for secondary sources try including the search terms "history" or "criticism" with other keywords. For example, searching "Austen and criticism" should lead to sources that provide analysis of Jane Austen's work. "Brooklyn and history" should lead you to sources about the history of Brooklyn.
For primary sources, an author's letters or diaries can be useful. Use search terms such as "diaries", "letters", or "correspondence" in combination with the author's name.
In the Blackburne Library, physical books about literature are located in the 800s (Dewey Classification). History is in the 900s. Social Sciences are in the 300s.
JSTOR - Remember to use the Advanced Search feature. You can limit your search to specific item types. Limiting item type to "articles" will give you scholarly articles. If you are looking for reviews of particle book or author, you can limit the item typle to "reviews". You can filter your search results by Jouranal discipline (or subject). There are over 460 journals in JSTOR related to language and literature. You can also filter by subjects such as "Feminist and Women's Studies" or "Jewish Studies".