Covering harmonic ratios and intonation, modal 2- and 3-part counterpoint, diatonic and chromatic harmony up through the secondary dominant, and an introduction to part writing.
This book is the most complete of the three.
This is still in development, but has some significant chapters on chromatic harmonies such as the Neapolitan 6th and Augmented 6th, as well as some information on modulation to remote keys
This will contain pages on 19th Century Chromatic Harmony and 20th Century Compositional Practices and Analysis. It is so far just a plan, not a realized book.