"My dear, Severus," he smiled playfully, "The plans were made not long after you broke the horrid news of having to suffer through another one of Voldemort's regimes."
Draco filled their glasses, well the canter filled the glasses would be more precise.
"Alas, even making transcriptions of them are hard, many are charmed to resist such efforts. But there are always ways. A list of topics of where you'd like to start would be good," Draco trusted Severus with his life, but these were still Malfoy possessions. They'd be stored in trunks that would be boobytrapped for anyone but him or Astoria, not that his wife would ever go looking through them. He did give a rueful laugh, "Fortunately the same spells that would prevent you from looking at them would prevent that filthy squib siring nit-wit from looking at them, too."
"I will of course also need a private potions lab, and I think you might find my private stock to be rather... helpful."