As an example, I was looking at the papers of Wisconsin senator William Proxmire a few years ago. Proxmire was in the Senate for decades, but all told, he had just ~180 boxes. That might sound like a lot, but it’s not. Imagine the sheer volume of correspondence, briefings, memoranda, and paraphernalia a senator’s office generates in a year. Daniel Moynihan had a similar tenure and had something like 3,000.
And all of Proxmire’s history, or most of it? Gone.