Unless otherwise indicated‚ call numbers refer to Yale Center for British Art Library holdings. Check ORBIS‚ for other locations. Some online resources are restricted by contractual agreement to members of the Yale community. Library Catalogues Worldwide Sales and Auction Catalogues Reference Library Image Resources Links to Online Image Resources General Reference Sources Dictionaries‚ Encyclopedias‚ etc. Periodical and Journal Indexes Biographical Sources Literary Sources Historical Sources Manuscript Resources Yale University Library Research Guides Selected British Artists Libraries Museums and Galleries Organizations and Associations