Just gonna add that archives like this are absolutely vital for students too. During a module on animation, which included an historical/contextual research component, I relied heavily on "piracy" to source pretty much everything I looked at from the 1930s onwards - basically everything that was too new to have entered the public domain, but too old/unpopular/obscure to be readily available in a "legal" manner. Most of my fellow students didn't go past 1928, and they lost marks in that assignment as a result. I did not volunteer information about my sources for these files, and the teachers wisely opted not to ask. 😅