ACdre R. Williams (Chief of the Air Staff), and WgCdr W.H. Anderson (Air Member for Supply) of the RAAF Air Board, pictured in November 1930.
Not stated (collection of Miss G.E. Joyce)
Scan from Coulthard-Clark, Chris (1991). <i>The Third Brother</i>. North Sydney: Allen &amp; Unwin. p. 359