Gregg Speed Practice (1961) has just arrived in the post. I found it on Abe Books, and thought it was worth the Â£10 (that's about $19) they were asking for it. It looks great - though the cover is a rather bilious green colour :-)
I'll finish the Simplified manual first, of course, but it's nice to know there's something else waiting for me...
Has anybody else got it?