The topic title says it all, I am keen to learn the basics of locomotive valve gears and was wondering if anyone could recommend a good book or other resource.
Browsing myHobbystore a few weeks back I could have sworn that they offered a few books on the subject, but having a look today it seems as if not only have any books on valve gear disappeared, but many other titles that were on offer until recently have also gone.
I wonder if this is a web site hiccough, or a change in stocking policy?