The Accordion Encyclopedia - Part 1, from A to C
The Accordion Encyclopedia - Part 1, from A to C: Accordion, American Tuning, Bass Coupler Labels, Bass Mechanism, Bass Voices, Bellows, Bellows Straps, Button Accordion, Cassotto (Tone chamber), Celluloid Finish, Cent, Chest Mat, Chords, Chromatic Accordion, Coupler.