The list is ordered from largest to smallest (based on reported data from recent library surveys, ARL statistics, and official sources).

6. University of Cambridge

– Cambridge, UK

Collection Depth:

Total volumes and unique manuscripts (e.g., Harvard Library

  1. What year is the data from? (Libraries change fast. Data older than 3 years is likely outdated.)
  2. Does the count include e‑books and if so, how? (Counting one e‑book as a “volume” is common but inflates numbers dramatically.)
  3. Is this the main library or the entire system? (Often the law, medical, and branch libraries are included – that’s fine, but know it.)
  4. Does the library serve mostly undergraduates or researchers? (A huge research library may feel cold and overwhelming for first‑year students.)
  5. What are the access policies? (A huge collection locked in closed stacks or limited to faculty is less useful for most patrons.)