Absolutely correct - but its a bit like Skennerton(and others') books - you publish what you know at the time and a month ot two late someone says "if only you'd asked me ......."
We all have to start somewhere.
Maybe we can take this thread as an opportunity to build upon the knowledge and add pictures and info so as to get a more complete listing.
Come on - add those weird and wonderful sights you've got hiding in the "shed".