The Geo-Heat Center and the Quarterly Bulletin celebrate 25 years of continuous operation this year. Much of what we have accomplished over the years was documented in Vol. 16, No. 4 (October 1995) and Vol. 14, No. 3 (December 1992). Our beginning can be traced to an international conference held on geothermal energy on the Oregon Institute of Technology (OIT) campus in October of 1974. The Geo- Heat Utilization Center was then established in early 1975 as the publisher of the proceedings from this conference. The 25th anniversary of this conference was commemorated with a second international conference: “International Geothermal Day - Oregon 1999" held on campus and attended by over 100 persons from 30 countries (see Vol. 20, No. 4 - December 1999)