Creating Diatonic Jazz Chords (and Melodies) from Major Scales – Guitar Kitchen
Diatonic Chords: Triads And Sevenths In Every Major Key
Amazon.com: Sliding Ruler - Magic tool for the practice of PENTATONIC, DIATONIC and MODE scales/Pentatonic Sliding Ruler for Guitar: The essential tool for ALL Guitarists : Musical Instruments
Diatonic Guitar Chords & Chord Progressions
Diatonic Triads Complete pt. 1 - Traditional Triads: Chords by Fourths - by Tom Lippincott