This is a very long-shot, but I'm hoping someone may happen to have photographed a specific map held at the National Maritime Museum in Greenwich (UK). It is this exploration chart which shows an early European exploration in the north of (now) Tasmania. I suspect it will be a while before I get to the UK again so am wondering if there is a slim chance that someone might have a photo of this one in their collections, before I attempt more formal paths.
I have a version from the Tasmanian Archives, but have also seen a poor copy of a poor microfilm of the Greenwich version. It looks like there are some differences which relate to my interest in this chart.
(University of Tasmania)