Oxford Bibliographies Online
This database, essentially a collection of annotated reading lists on topics from across the humanities, social sciences, and interdisciplinary sciences, will have extraordinarily utility for you during your four years at Harvard. Consider it an all-purpose tool, something that can work in tandem with HOLLIS at the start of projects.
Often the situation you face in information seeking isn't a lack of resources, but rather, their abundance. It can be challenging to figure out how to prioritize your reading, how to distinguish the good from the better or best, and how to identify the scholars who have done most to push the research conversation forward.
OBOs are selective, not exhaustive -- but selectivity makes them all the more useful. Items that look promising from an OBO entry can be searched by title in HOLLIS to determine their availability in print or in online form.
Examples of entries that relate to course themes: