Answers on a postcard... or if you prefer a more convenient method please leave a comment on this blogpost.
I do actually know the answer to this one (when and where the photo appeared), although I know nothing about the actual photoshoot.
So, think of this in terms of being a competition. Apart from the fact there isn't really a prize (although that feeling of complete and utter smugness if you are right has got to be motivation enough, right?).
Kudos for when and where the photo appeared.