Primary sources are the gold standard when it comes to researching historical events. Sources that were created, in real time, when the events were happening, they are the real deal, the good oil, the oracles of truth.
But what if they’re wrong?
I was contacted recently by Paul Jörg of the village of Denklingen in Germany, regarding a post in my 467 Postblog series from about a decade ago. Paul, who rather delightfully describes himself as his village’s ‘local chronicler,’ had identified a couple of errors that he wished to bring to my attention. In my post covering the Augsburg raid on 25 February 1944, I’d referred to the fate of 467 Squadron Lancaster PO-M LL756, flown by P/O HW Stuchbury. It crashed, I’d written, in a place called Deufringen. Paul wanted me to know that the bomber had in fact crashed in a field a couple of miles from his village – Denklingen, not Deufringen – and his sources showed that it was LL746, not LL756.
Looking at my notes from when I originally wrote the post, I found that I’d taken ‘Deufringen’ from Alan Storr’s otherwise excellent research on 467 Squadron losses. I don’t know what Storr’s source was, but the only primary document I could find was in the A705 casualty file for F/S JW Wood, Stuchbury’s navigator (NAA:A705, 166/44/108), where several pages clearly refer to Denklingen. On the basis of that I changed my post.
Sorting out what was the correct aircraft serial number was less straightforward, however. When I wrote my Postblog piece, I got my information from the 467 Squadron Operational Record Book, which states that Stuchbury and crew failed to return in LL756. And now, in Wood’s A705 file I found a copy of the original casualty signal from Kodak House in London to RAAF HQ in Melbourne. This signal also records the missing aircraft as LL756.
Two independent documents, sourced from different places, agreeing on a basic fact: that seemed pretty definitive. Primary sources over secondary, right?
But something was still unsettling here. The reference to LL746 had to come from somewhere. Was it a simple typo? Or did something more unusual happen?
To get to the bottom of it, the first thing to do was to establish that both serials had actually existed. I checked the lists in the back of my copy of Bruce Robertson’s Lancaster: The Story of a Famous Bomber (1964), and found entries for both aircraft – which revealed something very interesting:
LL746: “467 Sqn 1Jan44, Missing 26Feb44. 87hrs.”
LL756: “101, 467 Sqns. Missing (Augsburg) 25/26Feb44. 261hrs.”
Well look at that. Not only did both aircraft exist, but apparently they both served with 467 Squadron and, almost unbelievably, both went missing within a day of each other.
Hmm.
Back to the 467 Squadron ORB: could I find both serials there? I closely checked the Form 541s for January, February and March 1944. Between 20 January and 15 February, LL746 appears on six operations, including five to Berlin. The 15 February raid (coincidentally Jack Purcell’s first operation)[linky Postblog] was with Arthur Doubleday’s crew. But then LL746 vanishes from the records. On 19 February, Doubleday is recorded flying to Berlin in… you guessed it… LL756, and that second serial then appears on three more operations, including the 25 February Augsburg raid with Stuchbury. Neither serial appears in the ORB after that – and what is more telling, I think, is that the two serials never turn up flying on the same raid.
That, to me, strongly suggests that all those ORB entries refer to the same aircraft. The aircraft that Doubleday took to Berlin on 15 February was the same one that he flew there on the 19th. One of the serials is incorrect – but which one?
The clue was in Robertson’s list. The entry for LL756 carries an innocuous-looking reference to 101 Squadron. It wasn’t totally unknown, but it was highly unusual for a Lancaster to be transferred to a different squadron. If I could find LL756 in the 101 Squadron records, I thought, that would strongly suggest that it never flew with 467 Squadron at all.
The 101 Squadron Operational Record Book is available to download free of charge from The National Archives in the UK. Searching through these documents is a very laborious process – they’re not often searchable digitally, so you have to go through them manually – but a simple Google search turned up a post on the RAFCommands forum, which referred to LL756 and a runway accident in September 1944. Knowing that, it was then a simple matter to download the documents for the correct date range; I then found LL756 listed on several operations with 101 Squadron.
If LL756 was still flying in September 1944, it clearly could not have been shot down in February. That means that it was not the aeroplane that crashed near Denklingen on 25 February 1944. It’s therefore most likely that the crashed aeroplane was indeed LL746, and both the 467 Squadron Operational Record Book and the RAAF’s casualty notification are incorrect.
How can two independent, contemporary, primary sources both be wrong? I think it’s because they’re not as independent as they might first appear. Operational Record Books were compiled by the staff in the squadron’s Orderly Rooms. And the very first casualty signals – supposed to be sent to Group HQ within an hour of an aircraft becoming overdue – were sent from the same rooms, by the same staff.
This is how I think it happened: at some point between 15-19 February 1944, someone in the 467 Squadron Orderly Room at Waddington mistakenly typed a ‘5’ instead of a ‘4’ when referring to PO-M. That simple error rolled on for the next three operations, too – and then, when the aircraft failed to return from Augsburg, it made its way into the casualty signal to Group HQ, and then into the next signal to RAAF HQ at Kodak House, and then into the signal sent to Melbourne – and from there, into the historical record.
Primary sources over secondary, any time. Except when they’re wrong.
Thanks to Paul Jörg in Denklingen for the information that started this search.
© 2025 Adam Purcell







