This trophy can be obtained during Chapter 13: Debriefing (the Tyler section). When you speak to the owner of the bookstore, choose the following options:
- Cough
- Insist
- Book
- Insist
When you walk away, he will stop you and ask you to find a book for him. There is a method to finding it yourself. You first need to examine the book at the desk under the stairs you came down at the start. Examine the book so that you are no longer carrying it. Note the name of the author; "De Gruttola". Go up the main stairs and examine the book on the table to the right. Note the year associated with "De Gruttola"; 1796.
Go back downstairs and look behind the owner on the raised platform. This book will tell you which color and floor to look for books in certain year ranges. 1796 would be White, and on the 3rd floor. Head up there and interact with the shelves to pick up the book. Bring it back to the owner and he will fill you in the information you need. The trophy should unlock.
NOTE: You can skip the process of checking each book and just go straight to the White section on the 3rd floor if you prefer.
