Assume a cemetery that is commonly known as the Anglican Cemetery. It is currently in use, but a number of graves date back 200 years. A book about some of the early graves is entitled “A guide to the Anglican Historical Cemetery”.
It seems to me that “historical” implies “no longer in existence” or “no longer in use” and therefore does not apply to this cemetery.
On the other hand, is “historical” redundant? Aren’t all cemeteries essentially historical?