06/05/2015 Ballpoint-pen drawings of birds on vintage used paper, by Mark… Ballpoint-pen drawings of birds on vintage used paper, by Mark Powell. (View on Tumblr)
26/06/2012 Bic pen drawing on envelope by Mark Powell. Bic pen drawing on envelope by Mark Powell. (View on Tumblr)
28/03/2012 Mark Powell; Bic Biro on 1892 german envelope Mark Powell; Bic Biro on 1892 german envelope (View on Tumblr)
