When Tara Chan, seen in this candid shot during the master class, asked me for information about them, I thought I should post it here for everyone:
Chopin, pianist and teacher - as seen by his pupils by Jean-Jacques Eigeldinger. The link takes you to Google Books, currently enabling you to read at least a substantial part of the book online. The cheapest place to purchase one at the moment seems to be The Book Depository
The Art of Piano Playing by Heinrich Neuhaus has been on our book shelf for about 30 years or more. My wife, Joan bought it and liked it - now, I'll have to read it, too.
He also recommended C P E Bach's Essay On The True Art of Playing Keyboard Instruments.
Roger Woodward told us that the Chopin book gives inside information on how this master performer and teacher taught. Neuhaus' book refines this. The book by Bach's most productive and most famous son gives insight into how Bach should be played by the great master's biggest fan.