The Infocom Gallery: Deadline - High-quality scans of the gray box, manual, letter, coroners note, pills, and crime scene photo. - http://infocom.elsewhere.org/gallery/deadline_grey/deadline.html
Infocom Documentation Project - PDF file of scanned original game manual. - http://infodoc.plover.net/manuals/temp/deadline.pdf
Matthew Murray: Deadline - Capsule review. "Deadline is a ground-breaking game that no adventure game fan--or mystery buff--should leave unplayed." - http://www.matthewmurray.net/Reviews/ComputerGames/Deadline.html