Maybe a start here:
http://www.commodore-amiga-retro.com/amiga/amiga_scuzz56.htm
PZ.
Thanks for your replies everyone. Well scuzz used to hang around Amiga.org...until now? It'd be nice to know exactly what was on the disk, and for the disk to be imaged and preserved on TOSEC or something.
I have a 1438 myself which I'm still using as my main Amiga display. I still can't find that pesky horizontal size control... they hid it well!