When Apple revised the Lisa Office System software to 3.1, we didn't change
the dialog screens that appear when you install the software. Therefore,
each disk shows version 3.0.
However, after installing the OS and starting up from the volume onto which you
installed the software, check the startup "Wait" message box. This should
properly reflect that the Lisa Office System you installed is in fact version
3.1 -- or, as it is commonly called, Lisa 7/7.