Los Archivos Mayo was a project made by Joystick. Mario Posada filmed with 16 and 8 millimiter cameras between 1946 and 1965 lots of images of Medellín and other places of the world. Joystick digitalized 29 hours of footage and then invited various artists to use this images for short videos. A book with a dvd and an exhibition of the project was organized by Espai-Zerou in 2006

http://www.jstk.org/proyectos/mayo/
http://www.olot.org/cultura/zerou/