Complex sentence: Matsura was buried in Okanogan and his photographic negatives went to a close friend, Judge William Brown, who ultimately gave them to the Washington State University archives, which has catalogued the images and placed a valuable collection on the internet.
Split into simpler sentences: Matsura was buried in Okanogan and his photographic negatives went to a close friend, Judge William Brown. Brown ultimately donated them to the Washington State University archives, which has catalogued the images and placed a valuable collection on the internet.