Some identifying information is written on the rear of each photo. There's a fair amount of identifying information in the full version of the picture below.
Not enough to hand the photos back.
So here's a snippet. A lady, pictured with someone else. If you are the someone else, and want the photos, all you have to do is e-mail firstname.lastname@example.org with enough identifying information of your own.
If you can prove you are that other person, I'll send the photos through the post. Here's the lady, cropped and airbrushed...
It is worth adding that I've thrown this story out on the Twitter a few times, as a digital message in a bottle - I didn't rely solely on the blog to reach friends or relatives of the mystery woman.