I ran across a little 'GEM' while bulk imaging disks over the holidays, it is MouseFiler version 1.1.8 made by Harbor Software in 1986. It is a mouse text, 80 column, 8 bit, graphical (if mouse text can be called graphics) operating system for the 8bit Apple computers.
I have found reference to version 2.0, but have yet to locate it or any documentation on this nifty little program.
If anyone has this program in their collection, please share.