The Bearded Lady

So Andrew has been working non-stop on a project for work trying to get it done before the deadline.  We actually both pulled an all-nighter on Sunday night trying to get everything finished... and I thought my days of all nighters  were over with college.  On Tuesday morning, all that was left to do was stamp all of the reports with Andrew's engineering stamp and sign the letters, and he was done.  As he was reaching for the self inking stamp, he realized it wasn't there... but where was it?  I'll give you one guess.