Back when I was a student I asked several Smalltalk vendors to provide a version of their Smalltalk to put on a CD so people could start learning it. The GSUG Smalltalk CD was born which we handed out on conferences. VisualAge was not included since it was too large for one CD.
Later this concept was used for an ESUG CD too.
Times and hard disk space have changed and now James reports that Marten Feldmann has put together a virtual box image with several Smalltalk versions. Go check it out.