Few photographers have dedicated as much as Martha Cooper to documenting street art and street culture. Her seminal Subway Art set the tone, and she hasn't half-stepped since. New from Dokument Press is Martha Cooper: Postcards from New York City 1978-2010, a collection of photographs—many previously unpublished—that follows the birth of hip-hop and the gentrification of the Big Apple after 9/11. Powerful stuff in every case, this is a must for any fan of graffiti and urban photography.