Mark Powell is a fine artist from Leeds who is known for his Biro pen drawings on envelopes. As he describes the process, he started making these types of works when he was given an envelope from the front lines of World War 1. On this envelope he drew what he imagined the sender may have looked like as an old man. The immense detail in his work comes from reference images he takes of people on the street. From these he makes the image and the envelope work together. Currently, Powell is working on larger drawings on vintage maps while continuing with the envelope work. To see his famous envelopes, click here.