The book below has recently been published by Shiffer in USA.
I have just taken delivery of a supply for re-sale in UK & Europe
so do contact me if I can help (or contact Schiffer directly if
you live in USA).

"Automatic Pianos and The Orchestrelle", by A.W.J.G. Ord-Hume,
published summer 2004, hard-back.  504 Pages, 603 b/w illustrations,
43 in colour.

Price 69.95 GBP + postage; weight without packaging: 2.6 kilos.

Chapter Headings

 1. A Brief Introduction to Mechanical Musical Instruments.
 2. The Earliest Automatic String-playing Musical Instruments.
 3. Barrel Pianos - History, Development & Manufacture.
 4. Mechanical Player Actions & the Birth of the Pneumatic Player.
 5. The Technical Evolution of the Player Piano & its Industry.
 6. Perforated Music & the Wrath of the Copyright-Holders.
 7. Sales Peak, Social Influence, & the Decline of the Player Piano.
 8. How the Pneumatic Player Piano Works.
 9. Expression Pianos & Electric Actions.
10. Reproducing Pianos - Their Evolution & Performance Claims.
11. The Music Roll - Piano Repertoire & Presentation.
12. The Player Piano in the 21st Century: High-points & Weaknesses.
13. Looking after Automatic Pianos & Music Rolls: Tools & Skills Needed.
14. Conserving the Barrel Piano & Adjusting it's Music.
15. How to Play the Player Piano Artistically.
16. Roll Playing Reed Organs - The Aeolian Orchestrelle.
17. Restoring & Playing the Aeolian Orchestrelle.
18. Living with the Self-playing Piano - Care & Maintenance.

Appendix.
1. How they sold Player Pianos - Adverts of the Day.
2. List of Makers, Main Agents, & Inventors of Player Pianos.
3. List of Principal Player Piano Brand Names.
4. Music Roll Makers & Brand Names.
5. What's it Worth?  Valuation & Price Guide.

Support Organisations for Player-Piano Enthusiasts.
Bibliography.
Index.

I still have copies available of my own two recent books,
"The Organette Book" & "Mechanical Music".

Kevin McElhone, Northampton, England.