Martha Cooper is a documentary photographer who has specialized in shooting graffiti and street art for over thirty-five years. Her books include Subway Art, a collaboration with Henry Chalfant, R.I.P.: Memorial Wall Art, Hip Hop Files 1980-1984, We B*Girlz, Street Play, New York State of Mind, Tag Town, Going Postal, and Tokyo Tattoo 1970. She lives in Manhattan but can frequently be found at street art festivals worldwide. You can follow her travels on Instagram @marthacoopergram.