Who do I thank?!

When I got home from running errands this afternoon, the book "The Fireman's Wife" was left on my doorstep. There was no note, and Tony said he didn't see anyone come up to the door. We're not sure if it was a neighbor, or one of the tons of people who walk by our house everyday to drop their kids off at school. Tony and I both have union stickers on our cars, and a firefighter windchime out front, so it's obvious a firefighter lives here.

Whoever left the book for me, I want to thank! Your unexpected gift was very thoughtful!