The Canadian Museum of Nature (CMN) offers an online version of its Natural History Notebook series originally published in 1977-81. Interesting facts and attractive black-and-white sketches are provided for each of the nearly 250 animal species (mostly vertebrates) featured in the Web site. All illustrations are by Charles Douglas, former chief illustrator at CMN. The notebook collection includes one each for mammals, birds, fish, reptiles, amphibians, invertebrates, endangered or extinct species, prehistoric life, and another that allows users to search for animals by geographical region.