Posted by js on June 17, 2002 at 13:31:12:
In Reply to: Re: Hi-Pitch / Lo-Pitch / A440 - When?? posted by 1939 on June 17, 2002 at 12:21:08:
I have a very old set of Musser tuning forks that (on the A tuning fork) has a much earlier date than that for an "official act" dictating A=440.
The set not being here, I think the "act" was U.S. Congress and not international.