For years, from one major Warhol exhibition to the next, entire bundles of drawings have been published that go back to the 1950s, when the artist was not yet an artist and tested his idiosyncrasies, desires and erotic images for their consistency in intimate series.
Between intimate idyll and pornographic bizarre there is a lot to discover.
And science is still in the process of implanting all of this with the necessary philological care in the gigantic Warhol corpus.