In 1986, it was unlikely that the original contract for the book mentioned anything about electronic rights. As it was a reprint anthology, the rights purchased

In 1986, it was unlikely that the original contract for the book mentioned anything about electronic rights. As it was a reprint anthology, the rights purchased would have only covered the use in the anthology as long as it was in print. Which means that to post the book online, Rucker would have to contact the individual contributors and get new permissions. Did he do that? I make a guess that he did not. It is not clear from what is stated here.