Fascinating obituary and although not aircrew he was patently held in high respect by his fellow squadron members and senior officers. Having the job of compiling letters to the relatives of lost aircrew must have been a particularly difficult task.
I recall that after the debrief for Op Chastise Guy Gibson gave 617 Squadron a stand-down, but he stayed behind to help write letters and reports, presumably Harry Humphries was there too? I am due to visit Scampton soon so I'll have a quiet moment of reflection near 617's old hangar.