Shepard Fairey (interviewed here) is now working on his largest mural to date in Detroit. Located at ONE Campus Martius at "the Belt" and measuring 180' x 60' feet, it is a permanent fixture to the area playing host to his upcoming solo exhibition, "Printed Matters". Opening this Friday at Library Street Collective, the show will feature a variety of Fairey's latest printed materials, serigraphs on paper, collage, and editions on paper and metal. Check out our coverage of the mural in progress after the jump.