Some other towns still require it however.
Which ones? I'm not aware of any. I'm not saying you are wrong, just that I don't know of any and am curious about it. Over the years I have written membership letters for Boston residents, but never for any other towns.
On a different question, does anyone know exactly which target is used on the Moon Island test? It is my impression that they use a replacement center target, but I don't know which one.