The WashU Libraries system comprises nine libraries: John M. Olin Library and seven distributed libraries on the Danforth Campus; the Bernard Becker Medical Library on the Medical Campus; and the West Campus Library. (For a complete list of all libraries, visit the Libraries site.)
On first reference, use WashU Libraries. In all subsequent references, use Libraries.
Do not use WUSTL Libraries or WU Libraries.
The name “WashU Libraries” is a plural subject that takes a plural verb.