This sounds like an interesting venture.
I did some looking into Oxenham & Smith for my book on the AFC. It sounds like you're aware of the Smith interviews (he has a manuscript account and recorded interview at the AWM too- id be happy to mail you a CD ROM of them)- and he of course, speaks at length about the events leading to Oxenham's death.
Conrick mentions Gordon Oxenham having a dog- it would run up to anyone who arrived at the aerodrome in the days following Oxenham's death thinking it was its owner returning. Quite sad really.
Now- regarding that photo you mention. I put the photo in my book and labeled it as being Smith in front of their crashed plane. I got it from the RAAF Museum (which apparently believes it is Smith). Mark Lax, in his Joe Bull book has a similar photo (obviously of the same mane, same crash) and also claims it was Smith. However, I was always a little suspicious that it might not be Smith because the man in the picture is balding. Smith was a young man- I think he was only about 21 in 1918- and the man in that picture with the pipe looks substantially older. That said, in the manuscript Smith wrote (that's in the AWM) he explains how the morning after the crash his Turkish captors took him back to the scene of the crash. He wrote: "I can never forget this dreadful site, and for the first time I realised what must have happened." He saw the German aircraft they had shot down nearby- and says "All three officers (ie- the two Germans and Oxenham) were buried with full military honours at Kitrine".
The photos on the AWM now suggest it was Len Heathcote in the imaage. I am doubtful of this though because Heathcote was shot down in a BE2e- and the aircraft in the image doesn't look to me like a BE2e (but admittedly, aircraft identification isn't my strength). Ill attach it below for the boffins.
So- I am not 100% sure it's Smith in that photo but I am quite certain it is (certain enough to claim it as such in publication, any how).
Oh- and the manuscript by Smith at the AWM clearly cites ground fire as the cause of their being shot down. I was aware that later in life Smith claimed it was an enemy aircraft.Given the manuscript dates from the 1920s-1930s I trusted it over the later interview and correspondingly put it down to ground fire in the boook.
9_Lawrence Smith.jpg 88.68K