Someone asked in a comment about the good drug books by Henri Michaux.
Here are two. I'll write about them soon. I always loved the title: The Major Ordeals of the Mind and the Countless Minor Ones.
These are out-of-print so snatch them up if you ever see them. They are both hardcovers. Major Ordeals definitely came out in paperback too, in a 70s Harcourt Psychology series (!) if I remember correctly.