On the metal sill, opposite the reloading bench, in the area with the office. Though the location exists without the add-on, it is sealed by a keyless lock. Note: If the game is unpatched, the door is unlocked, and you will be able to enter and get the book.
Puesta del Sol switching station in the south center of the map on the upper level next to the terminal that shuts off power to the protected speakers. It is very difficult, but possible, to reach without Christine and disarm the trip wire before your collar detonates.