Moonee Valley Libraries Facebook on 6 November 2015 to put together a timeline of photos of the Burke and Wills tree under which the explorers were said to have camped in 1860. By the time photographers began to record the tree, it was long dead. A search through Trove enables us to give the last possible date to the above photo from the State Library of Victoria Collection as 1938. (see H91.50/569) The Essendon Historical Society collection includes photos of the dedication of the new memorial in 1938.
You can see the photo timeline on my Time Travellers website. If you wish to keep up with additions to the website, follow by email. (See above, right).