vivipiuomeno1:Lisa Oppenheim ph. - Heliogram July 8, 1876 - October 16, 2011 (detail), 2011, gelatin
vivipiuomeno1:Lisa Oppenheim ph. - Heliogram July 8, 1876 - October 16, 2011 (detail), 2011, gelatin silver print, exposed by sunlight, toned -- source link