the situation is differant if the note or whatever was found at the woods as opposed to the finding it in the restaurant...
I just can not imagine leaving a note that you want answered in the woods where it would probably not be found until the next day...and it was raining there, so the note might not be very readable after a night outside...
if they found a cell phone....a cheap one .....one that had no other info on it....that could be a possiblity...
frankly, I can not tell you what MY cell phone number is.....or my dtr's....the numbers are already in the phone so I never actually have to punch in numbers....