Bill Byron, possibly in Cossack.
Possibly Harold Aubrey Hall.
This item is held in the <a rel="nofollow" class="external text" href="https://hmwilson.archives.org.au">H.M. Wilson Archives</a>. For details see <a rel="nofollow" class="external free" href="https://hmwilson.archives.org.au/items/163.html">https://hmwilson.archives.org.au/items/163.html</a>