I have uploaded the Pdf of Liber Accusationis, Book of Accusation against Pope Paul VI. Abbe de Nantes believed that Paul the VI was a legitimate pope, but he blasted him in this book. He actually challenged Pope Paul VI to declare himself a heretic. I would have loved to have seen that, "By the way, I am a heretic." And he defended the young seminary at Econe on page 38. He also said that Lefebvre deserved to be a cardinal, but that Pope Paul was not having it.
I also have book two which the Abbe printed in 1983.