https://www.amazon.co.uk/Subway-Martha-Cooper-9-Jul-1984-Paperback/dp/B011T80QAK/ref=pd_lpo_sbs_14_img_2?_encoding=UTF8&psc=1&refRID=A3YPQ5NKVDNS708BK1Q5
The best graffiti book ever. I had 2 copies of it, cant believe the price of a 2nd hand copy now, 45 upwards with new ones fetching near...