http://www.microsoft.com/about/companyinformation/timeline/t...
Some notes: The Marvel product turned out to be The Microsoft Network (short MSN v1, not to be confused with later iterations of MSN web services): http://content.time.com/time/nation/article/0,8599,2306,00.h... . The Cairo operating system (aka Win96) was never released: http://en.wikipedia.org/wiki/Cairo_(operating_system)