As noted in a previous post, we don't have a recording of Isaac Newton's Philosophiæ Naturalis Principia Mathematica, "justly regarded as one of the most important works in the history of science". Nor do we have Robert Hooke's Micrographia, "a historically significant book" that was "the first scientific best-seller".
And before you say "Well, why don't you record them?", I do intend to...