For some reason, the FTP server I downloaded most of these browsers from had no versions of Firefox, so I added 2 versions:

1.5.0.15 - The last version to support Windows 95 (though I encourage you to try retrozilla afterwards for basic net use)

2.0 - The Last version to Support Win98 and NT4. (I still enourage you to try retrozilla, though firefox 2.0 is fine if you have a web proxy set up and want to scroll through backed up geocities websites, retrozilla displays annoying pop ups when going through those)