I dug this thing back out after many years. I realize I've never
actualy read the thing cover-to-cover, though I poked around in it a
while long ago. I remember it spending a lot of time on 5 and 6 note
voicings. Guitarists faced a completely different set of problems
then. So I thought, "Hmm, maybe I oughta go through the whole thing for
fun."
The first text, after a bunch of key, chord and scale reference charts is this:
> This book is intended for andvanced players. It is taken for granted
> that the student knows all chords (in all their forms or inversions)
> key signatures, scales, etc. Studnets not familiar with any chords
> referred to here, will find them fully explained in Eddie Lang's
> Intermediate book, "Fingerboard Harmony" for the Plectrum Guitar.
So head at least had two method books at one time, and in theory one
was published prior to this one in 1935.
I think I'll give it a more thorough spin.