When I went to college decades ago, and first walked into the main library, it took my breath away. I'd never been in the presence of so many books.
Finding WorldCat.org yesterday, felt like that.
"WorldCat.org is a resource for locating unique, trustworthy materials that you often can’t find anywhere except in a library. By connecting thousands of libraries’ collections in one place, WorldCat.org makes it easy for you to browse the world’s libraries from one search box."
"In the past fifty years, thousands of libraries have represented their collections in WorldCat. Today, you can search WorldCat in nearly 500 languages to find physical items like books, audiobooks, maps, musical scores, and recordings, along with electronic items like ebooks, e-journals, articles, and digital images you can access online."
https://search.worldcat.org/