The collections of the Yale University Library are represented in multiple online catalogs and card catalogs.
Together, Orbis, Morris (the Law Library catalog) and the CRL Online catalog or Center for Research Libraries (CRL) catalog (Telnet link) constitute the Yale University Library online catalog.

• Use these catalogs to determine what materials (books, journals, archival collections, etc.) are held by Yale, and where these items are located.
• Materials published prior to 1977 that do not appear in Orbis (OPAC) can be located using the "union" card catalog in Sterling Memorial Library. More than one-third of the Library collection is represented ONLY in the card catalog.
• There are also numerous Special Library Catalogs that provide unique access to the Yale Library collections. For example, Government Documents and Maps are NOT represented in Orbis or the SML card catalog.
• The Law Library maintains a separate online catalog called Morris.
• Additional materials purchased cooperatively are available through Interlibrary Loan from the Center for Research Libraries (CRL).

About Orbis:

ORBIS Operating Hours:

Sunday:	Orbis begins at 7:00 a.m.;	ends 4:00 a.m. Monday	(21 hours)
Monday:	Orbis begins at 5:00 a.m.;	ends 4:00 a.m. Tuesday	(23 hours)
Tuesday:	Orbis begins at 5:00 a.m.;	ends 4:00 a.m. Wednesday	(23 hours)
Wednesday:	Orbis begins at 5:00 a.m.;	ends 4:00 a.m. Thursday	(23 hours)
Thursday:	Orbis begins at 5:00 a.m.;	ends 4:00 a.m. Friday	(23 hours)
Friday:	Orbis begins at 5:00 a.m.;	ends Midnight	(19 hours)
Saturday:	Orbis begins at 7:00 a.m.;	ends Midnight	(17 hours)

How to search Orbis:

Orbis Searching Guide

Online Orbis Tutorial

Looking for a particular index, database or electronic journal? Browse these annotated alphabetical lists of periodical indexes, full-text databases, and electronic journals. These resources are available from any networked computer. Most of these resources are limited to use by currently employed or enrolled faculty, staff, and students of the Yale community.

Subject Guides

Beginning to do research in a particular subject area? This is a collection of guides to materials at Yale and on the Internet by subject.

Library Catalogs: Local and Worldwide

Important information about the many catalogs available in the Yale Libraries. Looking for materials that Yale doesn't own? Here are links to online catalogs of libraries around the world.

Library Information

* Library services such as Interlibrary Loan, Circulation, Collection Development and Reference

* Library workshops and tours

* Library Staff Directory

* Library hours and library and collection descriptions

* Stack directories for Sterling Memorial Library, Chemistry Library, and the Divinity Library.

Starting Research

Online tutorials & guides, tips on defining your topic and locating material, and links to helpful information for beginning research at Yale Libraries.

Search this Site

There are many ways to locate information using the Research Workstation. Use this search form to find words that appear on Yale University Library Web sites. This is a quick way to find links to databases, electronic journals, and selected internet resources, or to locate information about Library, its collections and its services. Please note, this form will not search Orbis, the Library's online catalog, nor will it accept Orbis search syntax (e.g., a=joyce james.)