Infrared photography on black-and-white film is used to reveal often invisible artwork on painted planks in storage at the Museum of Anthropology, University of British Columbia, by photographer and graphic designer William McLennan. The planks graced a house in the Tsimshian Indian village of Port Simpson on the Pacific coast in northern British Columbia sometime between 1830 and 1850. Infrared revealed a housefront painting measuring 12 m wide by 5 m tall. The painting is of figures known to represent family crests and is typical of art by Northwest Coast Indians whose mythology dealt primarily with animal-human transformations. The color scheme is red and black. Infrared photography has also been used on 1,000 other paintings, most of them on old wooden boxes. At least 2,000 remain to be recorded. Some artists used blood plasma, presumably from birds, as a binder in the paint while others used ground-up salmon eggs. (Abstractor's note: The article does not present chemical analytical evidence for this statement.)