Letter to the sky

Is a paper airplane a letter to the sky?

Letters from Grandpa

Sometimes my grandpa sends us letters, and when I read them, I'm a little amused because they're like his journal entries almost. I don't think I've ever received a letter like one of his. They tend to be longish(or longer from other people's) and full of events that have happened in our family lately. It's different. Then again, I don't receive letters on a regular basis. I enjoy reading them though. It's just I don't feel like I can reply to someone's journal entries very well.