Sydney Rare Book Auctions sold a message stick from the Kimberley that was given to Ion Idriess in about 1930.

I have no idea whether the object has ended up in a public institution or a private collection.

Here it is: https://amsd.clld.org/contributions/IDRIESS1930#4/-16.62/125.74

In the same Lot there were a number of headbands for sale, traditionally worn by messengers and apparently made by Tracker Bull. A message stick from Tracker Bull is referred to in this lot but not photographed or listed for sale: https://amsd.clld.org/contributions/amsd_01121

Does anyone know who collected these items?