I think if they look around David, folk here might find a copy of the Bradley book on one of the 'Shaper' sites.
It's an interesting read but the down-feed described is for an Atlas 7" machine and (to me at least) it is a bit cumbersome.
In terms of learning general Shaper use – I think the Delmar shaper courses are more detailed and much better for learning (powered) shaper use. They are also available online – in both 1944 and 1950 versions – being broadly the same but with scanning differences. Again available for download on the 'NEME's shaper site
Whilst obviously sharing many similarities – I do think of my two (hand and powered) shapers as being very different beasts in practical use. The hand shaper (Adept no 2) can make quite delicate cuts on even very small parts but I try to avoid any large 'volume' cutting with it. The Atlas 7" is the opposite and is often used to size and clean up stock before any detailed work begins. It can do accurate work but is certainly not 'delicate' in the same way a hand shaper can be.
Like your Cowells Bob! 
Regards,
IanT