Some of them mention his ability to remember the location on the page the words were
This actually is easier than remembering the actual contents. I used to spend a lot of time doing various Bible studies, where being able to quote a verse supporting whatever you wanted to say was the best way to win arguments. This of course led to people being able to quote obscure verses and precedents from less known places. It was quite common for someone to say something along the lines of “there’s something supporting this in <some book>, around <some chapter> on the lower left side of the page”
This actually is easier than remembering the actual contents. I used to spend a lot of time doing various Bible studies, where being able to quote a verse supporting whatever you wanted to say was the best way to win arguments. This of course led to people being able to quote obscure verses and precedents from less known places. It was quite common for someone to say something along the lines of “there’s something supporting this in <some book>, around <some chapter> on the lower left side of the page”