ERG was a science fiction fanzine published by Terry Jeeves (1922- 2011).
Terry Jeeves was a major force in founding the Britsh Science Fiction Association, and was responsible for naming the club zine Vector, and did the art work for the first cover.
ERG was Terry's own personal fanzine and was produced on an old duplicator. Erg was always filled with Terry's illustration, which he handcut into the duplicator's wax stencils. The quality of the illustrations produced by others using the same medium was rarely matched.