When Sailnet had an email board we used this site (sailnethelms : Sail Net Helms Group
) to post our pictures and data. There is info there on Helms 30 and some email addresses for the owners. Some may be dated.
Also, go to the top of this page, click on resources and scroll down to email list archives. Go to the Helms site I spoke about above and you will also find more info on Helms 30 and their owners.