Signature Works, Artnet’s premier photography sale of the season, returns with an array of iconic photographs by masters of the medium. Highlights include a self-portrait by Robert Mapplethorpe and Annie Leibovitz's celebration of Keith Haring. Bid on widely recognizable works by Rodney Graham, Larry Clark, Lalla Essaydi, and William Eggleston, among others. From bold contemporary photography by Zanele Muholi and Ed Burtynsky to classic imagery by Francesca Woodman and Henri Cartier-Bresson, discover the full sale below and be sure to place your bids by May 24.