The IPS News Archive used to be at http://groups.yahoo.com/group/IPSnews/.
It was started as a bulletin service for IPS members. Christine Shupla kept it going for years, then John A Schroer IV took over. It's functionality was subsumed in the IPS website in 2014.
It was originally distributed as a basic text document, but is now published as an Adobe Acrobat portable document format, since the reader is free and available around the Internet. This format permitted archiving the publication in our Yahoo Groups area, and permitted the use of color graphics and images. To access the archive, members needed a Yahoo ID and password.
IPS News included IPS announcements, announcements about planetaria, planetarium vendors, and news about planetaria around the world.