ERG was a fanzine published by Terry Jeeves on at least a quarterly for forthree years.
Terry (1922 - 2011) was a major force in founding the Britsh Science Fiction Association, came up with its' Fanzine name (Vector) and was its' first editor.
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.