Let's not forget that Ditko had first dibs to his AF 15 OA that was eventually donated to the Library of Congress.
This is what Sara Duke one of the curators said about Ditko:
But one thing is clear: Artist Steve Ditko had no issue with the art’s provenance.
“I will say that Steve Ditko knew that the art was coming to the Library of Congress,” Duke says. “And even though he was an Ayn Rand objectivist, and those followers typically believe the government shouldn’t have any role in anybody’s life, he told the donor that it was theirs to do with as they wanted, and he had nothing to say about it. And that seemed very true to who he was.”