Levanger Museum has a collection of about 600 000 negatives, mainly from professional photographers in Nord-Tröndelag, covering a time span of more than 150 years. Most important are the Bjerkan, Ingulfvand and Renbjør collections.Of particular interest is the Renbjör collection, which contains some of Norway’s earliest photographic material in color. Harald Renbjör pioneered color photography in Norway, starting as early as 1907 with three color photography and Autochrome. He also explored practically every other way of photographing in color. In 1948 Harald and his son Per founded Norway’s first professional color film lab.Renbjör’s collection of three color images, in which you also can find Norway’s oldest existing color print from 1907, is rated as one of the five most important collections of it’s kind in the world, the museum being the only institution in the world having the complete work flow, from negative to finished print, of the three color photography process.