The Truck Note is in the ration depot just before the ladder that climbs to the military preparatory school area of Pittsburgh's Financial District.
After clearing out survivors, including soldiers hiding in the hotel, the hunters raided the army's stockade. Tanks and artillery were wrecked, but they repaired a Humvee with its 50-cal gun and now think nobody can touch them.
That is the Humvee prowling the streets in this chapter, the one you saw gun down civilians.
Abandon Zone Note
The Abandon Zone Note sits on the desk in the office at the far left end of the bookstore's first floor in Pittsburgh.
Accretion
Accretion, issue 6 of Savage Starlight, sits on a coffee table in a lounge on the second floor of the Hotel Grand, during the Hotel Lobby section of Pittsburgh.
Ambush Map
The Ambush Map is pinned to the wall of the room at the end of the hallway. Leave the stairs in the room with the two dead bodies, follow the corridor to its end and look on the wall.
Applicant Checklist
The Applicant Checklist is under the stairs on the far left of the bookstore's ground floor in Pittsburgh.