Russell Sipe - Comet Hale-Bopp - Includes a preface, facts about its discovery, a chronology of the events as well as images organized in five volumes. - http://www.sipe.com/halebopp/
SpaceViews: Comet Hale Bopp - Information, articles, observing tips and lists of links about Comet Hale-Bopp. - http://www.seds.org/spaceviews/halebopp/
UH Institute for Astronomy - Includes news and images obtained by University of Hawaii astronomers. - http://www.ifa.hawaii.edu/images/hale-bopp/hale-bopp.html