Hi to all.
I want to thank you all very much for taking the time to reply to this thread.
Your replies have indeed been most thoughtful and informative, and you have given me much to consider.
The subject of data protection and preservation seems to be not only quite extensive, but also seems to be something of an art, as well as a science. It's hard to get right, but easy to get wrong.
So, not wanting to get it wrong, I have rolled up my sleeves, am studying, and practicing, practicing, practicing.
Please let me apologize for not replying more promptly to your posts. It isn't out of disinterest, it's that I have been busy doing rather than talking.
Again, thank you for your interest and assistance. I really do appreciate it!