Online Service: CompuServe or CompuServe Information Service (CIS)
Synopsis: From Wikipedia :CompuServe (CompuServe Information Service, also known by its acronym CIS) was the first major commercial online service in the United States. It dominated the field during the 1980s and remained a major player through the mid-1990s, when it was sidelined by the rise of services such as AOL with monthly subscriptions rather than hourly rates. While I did not personally use CIS, it did have a large following in the CoCo Community and CoCo related SIGs (Special Interest Group). Sadly, all that remains are a few Messages, with the files sections are lost to history.
Missing: Unknown Number of Messages and all the files.