POLAR is the Public Online Library Access and Retrieval system. Is is an online catalog of materials available on ONU's campus and is maintained by both the Heterick Memorial Library and the Taggart Law Library.

POLAR includes printed materials, audiovisual materials, and selected electronic resources such as research databases, electronic journals and Internet resources.

POLAR also provides:

A connection to the OhioLINK Central Catalog

Information about individual patrons' circulation records

A listing of materials placed on reserve by faculty members

A comments/ suggestions box