The SPU Library provides access to over 200,000 ebooks which are accessible off campus. For print books, if you are able to come to the library, you can request items (from SPU and other schools) for contactless pick up. Sign into the library catalog when you have your search results and click on the request link. If you are unable to come to the library, you can request a scan of a chapter or two.
Research guides, encyclopedias, companions, concordances, chronologies, dictionaries, and bibliographies can provide important, credible, scholarly foundational information on movements, authors, and literature.