To learn more about how the Library of Congress decides what to collect, check out this recent Scientific American article: https://www.scientificamerican.com/article/how-does-the-worlds-largest-library-decide-what-becomes-history/
To learn more about how the Library of Congress decides what to collect, check out this recent Scientific American article: https://www.scientificamerican.com/article/how-does-the-worlds-largest-library-decide-what-becomes-history/