Published at 664 × 420 in Britannia Rules the Skies – The Flight of J.J. Hammond and Esmee McLennan
Auckland Industrial, Agricultural and Mining Exhibition (1913-14) :[Postcard. 1913]. Ref: Eph-A-EXHIBITION-1913-01. Alexander Turnbull Library, Wellington, New Zealand. http://natlib.govt.nz/records/22832682
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