Start with CLIO to find books and journals in Columbia University library collections. (Use the Educat catalog to find books and journals in the Teachers College Library.)
Then try WorldCat, the largest online catalog in the world, with over 100 million book and journal records.
To find dissertations, start with Proquest Digital Dissertations. Also check Dissertations & theses. UK & Ireland and DART, Europe's E-theses portal.
Other essential resources include:
One handy way to get an overview of scholarly literature on the subject of your research is to consult:
Oxford Bibliographies (Oxford University Press)
A series of articles on a wide range of academic subjects across all disciplines. Each article identifies, describes, and evaluates important books and journals for a specific subject. "Every article in our database is an authoritative guide to the current scholarship, written and reviewed by academic experts, with original commentary and annotations." (from publishers description)
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Have a quick question?
Check for the answer in our frequently asked questions.