"In 8–10 pages, research and write about your chosen topic . . . You may inquire into something already discussed in class or a topic of your own design pending my approval. I strongly encourage you to focus on one Supreme Court decision that we read as a class and branch out your sources from there."
HOLLIS has two main parts. There’s the traditional Library Catalog of Harvard's books, journals, films, sound recordings, maps, and so on. Then there’s a huge additional database of articles, reviews, etc. which come from various sources outside Harvard. Many of these are available online through Harvard's subscriptions.
You can search the Library Catalog separately, or -- especially if you want to find articles -- search for "Catalog and Articles" at once. These choices appear as soon as you start to type a search.
Search limits such as these appear on the right-hand side of the HOLLIS screen when you do a search. Most databases provide similar ways to refine a search.