On Friday I came home from work, and as usual, checked the mail. Sitting in the basket below the mail slot was a large-ish white envelope with what was clearly a book inside.

I wondered who would be sending me a book and tried to remember any circumstance that would lead to one sitting in my porch. Alas, I couldn't figure out why it came or who it came from, so I ripped the paper open to reveal this.

Huh. I guess I really am going to be spending my summer studying.