Found a passport belonging to Sarah Johnson on the sidewalk near Rittenhouse Square in Philadelphia.

I found a passport on the sidewalk near Rittenhouse Square in Philadelphia. It looks like it belongs to someone named Sarah Johnson, and it was last issued in New York. I was out for a walk when I noticed it lying there. I checked inside to see if I could find a contact number, but found none. I'm hoping someone can help return it to its rightful owner.