It took on a lot of different forms over the years. I started it when I was just out of my undergrad and starting grad school. Some of it was just nostalgic shots of winter—I lived in L.A. and I kind of missed winter—some of it was very benign, but then I started to find certain themes that really stuck. The real change, the real shaping force for it, came when I took the photo of the envelope. That photo is called "Not To Be Opened Until My Death,” and it was the one that added some narrative thrust to it—it gave it some content that was not just beautiful or nostalgic.