Next: Participants Up: Contents Previous: Cover This volume contains the papers presented at the fourth annual conference on Astronomical Data Analysis Software and Systems (ADASS IV) which was held at the Omni Inner Harbor Hotel in Baltimore, Maryland, from the 26th through the 28th of October 1994. ... To help keep up with new trends in software as they relate to advances in astronomy, the ADASS conferences are organized around certain topics of current interest. ...