The origin of the tuning fork.
Bickerton
R C
RC
North Staffordshire Royal Infirmary, Stoke-on-Trent.
Barr
G S
GS
D004739:England; D005197:Famous Persons; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D009146:Music / Q000266:history*; D010036:Otolaryngology / Q000266:history / Q000295:instrumentation*