The Urban and Regional Information Systems Association celebrated its 50th anniversary on Wednesday.

A half century ago in Los Angeles, on Aug. 28, 1963, 48 people attended the first annual Conference on Urban Planning Information Systems and Programs.

According to the URISA website, conferences then took place from 1964-66 in Pittsburgh, Chicago and Berkeley, Calif. In 1966, conference attendees approved a constitution that established URISA, and the 1967 event in Garden City, N.Y. was the first called the URISA Annual Conference. But URISA still considers the 1963 meeting in Los Angeles its first conference.

Greg Babinski, URISA’s immediate past president, said the inaugural event “opened a new horizon of thought” in the participants.

Click here for more about the history of URISA.