This is another recent acquisition and I'm lucky the urge to buy one struck me now that I live in northern Wisconsin; the book only deals with lichens found around lakes Superior, Michigan and a touch of Huron. Sure many species are found farther afield, but many are not and the epicenter of lichen density is Isle Royale in Lake Superior. Who knew? The photography is generally good, but the text includes descriptors as well since lichens can look very different when they get wet. There are helpful notes about similar species and interesting facts such as how a lichen got its name to what kind of dye can be made from it.