Squadron Leader William Ahearn
|Title||Squadron Leader William Ahearn|
|Measurement||Overall: 48.4 x 31.8 cm|
|Place made||Australia: Queensland, North Queensland, Cairns|
|Physical description||pencil with black conte crayon on paper|
|Description||Depicts a portrait of 261614 Squadron Leader William John Ahearn, RAAF, in Charge 824 Group, Royal Australian Air Force.|
Heysen was in Cairns documenting the staff and the volunteers at the Land Headquarters Medical Research Unit.