Let's see how long it takes for one of you to tell me where else I have seen this image recently.
Some of you might be thinking, "how would I know what Thomas has been looking at lately?" But, this isn't a test of how well you know Thomas, and it isn't a test of how well you know my blog. And there really aren't any clues on MyPorch--well only the slightest, but it would only make sense after you know the answer, so I don't recommend looking for a clue here--of course I do recommend going through the MyPorch archives, but I don't want to mislead anyone.
I think for some of you this won't be a challenge at all. And even if someone has already answered correctly let me know how long it took you to figure it out, or whether it stumped you. If no one has figured it out by Monday, I will add another clue. And eventually I will show you the back cover where the image continues. That might be the next clue anyway.