The latest issue of KMT magazine (vol. 25, Number 4, Winter 2014 – 2015) has a fascinating article in it about the Liepsner papyrus.
This papyrus is one of the earliest known copies of the Book of the Dead and the author (Thomas Liepsner) discusses the art work of the papyrus’ vignettes at length and points out some interesting details. He then uses these details to argue (effectively I think) that the artist who did the paintings was attempting to use perspective in his vignettes. If this is true it would be one of the very earliest known examples of perspective used in art.