Paddle8: Hans Ulrich Obrist's Passport - Hans Ulrich Obrist

https://paddle8.com/work/hans-ulrich-obrist/66132-hans-ulrich-obrists-passport

◇ At Frieze, Artists’ Trash Is Collectors’ Treasure - The New York Times
http://www.nytimes.com/2015/05/13/t-magazine/at-frieze-artists-trash-is-collectors-treasure.html