John's took his appointment book with him to a checkup but couldn't find it anywhere. He looked and he looked but he didn't know where it was.  It wasn't until he bought a new one, went home, took a shower that he found it.  Where was it?
doctor's office pocket office supply store
pocket
john obviously misplaced his appointment book on his person because he definitely brought it with him to his checkup and couldn't find it anywhere else that he could have possibly misplaced it.
took his appointment book with him