"Security Leak Newsletter" - Issues 1 - 3, high-quality American Traveller newsletter (incorporated into the Security Leak fanzine starting with issue 4) produced by Gregg Giles from December 1986 through July 1987. This set of newsletters has numerous gaming news, articles and scenarios for the Traveller RPG system. Each issue is letter-sized (8.5"x11") and contains 4 pages (12 pages of material in total).