THE TWELFTH ANNUAL CONVENTION
OF THE INTERNATIONAL SOCIETY OF UNIFIED SCIENCE

Held in August 1989 at Fort Collins, Colorado.

Hosted by Phil Porter. Attended by: Frank Meyer, Rainer Huck, Brad Elkin, Robin & Caroline Sims and Caroline, Phillip Porter, David & Lyona Halprin , Hoyt Stearns, Maurice Gilroy and Brian Fraser.