I have the opportunity to access the Castle Instrument Collection at Auckland in July. If there are instruments there that others are interested in, please tell me what you need, and I will do my best for you. It sounds as though they are happy to let me photograph, and will be removing the instruments from their cases for me.
I do have a list of the instruments, but unfortunately they are labelled as 'flute', 'recorder', etc., and no makers. They may be able to supply me with more details when I tell them exactly which instruments I want to see. I do know that they have a Stanesbury Jn tenor recorder - one of two extant - in there, but there may be a list member out there who knows of other interesting instruments.