Don,
have a look at the pages of other non-dead composers.
Exemplum gratia. This is a normal copyright notice to indicate:
* the composer has rights, both legal and moral;
* the downloader should pay attention to the copyright licencing of the composer’s works which are offered on the website.
You might be surprised to learn that we often have some submitters who do not have the permission of the copyright holders to upload copyrighted scores to the website. Likewise, we occasionally have visitations from publishers who are discommoded to learn that some works are in the public domain in Canada and the United States, when the same works are still protected by copyright in the European Union: they see a different copyright notice, which is based on the composer’s death date being between 50 and 70 years in the past. (It’s in fact a completely automated notice.)
So please ignore the copyright warning on your page — it’s just one of the website’s bells and whistles. The actual human beings in charge of the site are working under the assumption that the person with username “dsimons”
is actually legally and morally entitled to act on behalf of “Don Simons” : I’m sure you’ll disabuse us of this notion if that isn’t the case. ;-)
Cheers, Philip