Hathi Trust’s Emergency Temporary Access Service (ETAS) provides online access to in-copyright books in the Yale Library collection. Catalog records for ETAS items can be found through Quicksearch and Orbis. If you’re already using the Yale VPN, you can click on the “Log In” link at the top of any Hathi Trust page and select Yale from the drop-down menu (if you access Hathi Trust without using the VPN, you will initially receive a prompt to use Duo Multi-Factor Authentication in order to access the database first).
Catalog records for e-books from the Internet Archive can be found through Orbis and Quicksearch. The Internet Archive is currently making books in its collection available to one borrower at a time. To use the Internet Archive, borrowers will need to create an Internet Archive account.
The library now offers limited Scan & Deliver service. However, turnaround time for these services may be significantly delayed, and the fulfillment of Interlibrary Loan scan requests is dependent on our partner libraries. We ask that you prioritize requesting items that are the most urgent for your research. At this time, BorrowDirect and physical interlibrary loan services are suspended until further notice.
Background or "reference" sources are a great place to start your research. Reference works include bibliographies, scholarly encyclopedias, dictionaries, handbooks, and other sources that provide overviews of topics and suggestions for further reading; often they cite not only the secondary literature, but also primary sources.
Surveys and anthologies are also useful starting points for research, and some of these sources are listed here, too.