As student I had signed a couple of times and chosen my student nickname joe then, an invention of Henry Miller in his early Paris days.

Miller describes in one of those books how all buddies call each other Joe. Well, it stuck on me.

Later on nobody called me Joe anymore but as a signature I liked it most, that is so small and inconspicuous - actually a signature disturbs the picture, doesn't belong to it, is a concession to the public.

Also I liked James Joyce's proposition in 'Portrait of the Artist as a Young Man' that the artist has to step behind his work and clean his fingernails. So I hid myself with joe, joe is nobody or everybody just as well. Find the signature in painting 608?