What is HOLLIS? HOLLIS is the catalog for all of Harvard Library, including Countway. You can use a single, unified search to find most library resources. HOLLIS also manages your library loans. By logging in you can renew items, check due dates, and more. HarvardKey holders can easily access HOLLIS by following this link: Login to HOLLIS. For those without a HarvardKey, you can easily access HOLLIS by following this link: HOLLIS. Finding Help With HOLLIS HOLLIS User Guide Harvard Library online guide that includes tips for getting started and general documentation for how HOLLIS works. Request Training Schedule an individual or group HOLLIS training session with our staff using the Ask Countway form.