Antique hearing devices
This monograph covers the development of such collectible items as ear trumpets, conversation tubes, and devices disguised as fans, walking sticks, artificial fruit and flowers even the famous throne of King Goa VI of Portugal.
Please note that this book is now out of print, though you may be able to obtain copies from The Hugh Hetherington On-line Hearing Aid Museum in the USA.
If you live near or are visiting London, you can also purchase these books from Fletcher Wallis, who has a stall at Units 60 and 62, Admiral Vernon Arcade, Portobello Road, only on Saturdays 8.30-3.30.
Please address all further enquiries to Fletcher Wallis