But sometimes, used books contain more than monetary rewards.
Like this.
In case you can't tell what this is, I'll show you the back.
Yep. That's Anne Rice's house. And this postcard is from the quaint days when fan clubs used to advertise through the mail. I think I found this in my copy of One Hundred Years of Solitude, but I'm not sure. I've been moving it around. Postcards are the perfect size for marking trade paperbacks.
In my much highlighted copy of Their Eyes Were Watching God, I discovered these gems, reminiscent of an early xkcd.
"Like the Breakfast Club... except without the high school... and with more ARMIES." I really wish I knew what that was about.
(P.S. Click the images to see larger versions.)