1.Harvard University (Cambridge, MA): 16,832,952
![Image result for harvard university library](https://scholar.harvard.edu/files/timvertz/files/2004a69.012.jpg?m=1508541100)
2.University of Illinois at Urbana-Champaign (Champaign, IL): 13,158,748
![Image result for uiuc library](https://illinois.edu/assets/img/about/landmarks/grainger.jpg)
3. Yale University (New Haven, CT): 12,787,962
![Image result for yale university library](https://web.library.yale.edu/sites/default/files/images/dayroom.jpg)
4. University of California, Berkeley (Berkeley, CA): 11,545,418
![Image result for uc berkeley library](https://www.lib.berkeley.edu/historyroom/nrr.jpg)
5. Columbia University (New York, NY): 11,189,036
![Image result for columbia university library](https://library.columbia.edu/content/dam/libraryweb/news/2019_Library_News/Columbia-Magazine-Lightbulbs.jpg)