The area with this magazines will remain closed off until Chuck reaches Case 6-1: Help Arrives. It is located in the tunnels beneath Palisades Mall, in the room with the crashed Humvee and the ramp that leads back up to the Silver Strip. In the south corner there is a series of three 4x4s in front of a stack of boxes. The magazine is on top of the boxes, next to a Servbot Mask.
In Case West the book is in the Storage Bay. While on top of the catwalks on top floor of the Storage Bay, climb
on top of the metal crate closest to the west side railings of the catwalks. Leap and grab on top of the orange steel beam to the west. Run to the right along the steel beam then move to the left when up against the wall. This magazine will be in the far west corner of that steel beam. The magazine is hidden behind the orange steel beam on the west side.