Rogers LS3/5A

I have a pair of Rogers LS3/5As from the early 1970s that needs replacement tweeter felt pads and grills/grilles?.

My uncle gave these to me and said they are old but collectable.

Do I need to worry about sourcing original parts?

Is there a US based dealer/distributor that anyone can recommend?  I don't mind ordering overseas if I need to.

Thanks everyone!