Cheers Paul, that's very interesting - and thanks for sharing the pictures. Did they come to you through the family ?
If you're looking for more detail, I'm sure that the Vintage Motorcycle Club Librarian would be happy to look up entry numbers for you, either in period publications or subsequent books.
I don't know where you're based but assume you know that the Sammy Miller museum has a V4 Ajay ?
Just being nosey, do you know what he was flying at the time of his death ?