I am still working on them when time permits (I plan on retiring from my real job next July so if I am not done by then, then I will have all kinds of time to complete the project). I have two that are going through their final edit stages and will soon be published. One is a terminology book and the other is the gokui book. I also plan on having them printed in hard cover through Lulu.
I have added a huge amount of terms in the fist book and the second is in its polishing stages. Look for the eBook at Smashwords and the printed versions at Lulu.