I posted the following scholarly overview in response to a different comment. There are sources if you want to drill down further. https://www.open.edu/openlea

I posted the following scholarly overview in response to a different comment. There are sources if you want to drill down further. https://www.open.edu/openlearn/ocw/pluginfile.php/437863/mod_resource/content/1/Bagnall%20article.pdf https://www.open.edu/openlearn/ocw/pluginfile.php/437863/mod... The short of it is that Alexandria, including its libraries, declined as a center of scholarship after Ptolemy VIII exiled or killed all the intellectuals who worked there in 145 BCE. While the library survived, subsequent administration didn't maintain the institution. Whatever insults the physical institution suffered or when the buildings were finally destroyed, the institution of legend died from neglect long before then.