Earth Sky + Water - Peterson's Backyard Birds of Northern California - Double-matted Posters with Black FrameThe illustrations are by Roger Tory Peterson, along with James Audubon, are Americas most famous bird naturalists and illustrators The illustrations are by Roger Tory Peterson, along with James Audubon, are Americas most famous bird naturalists and illustrators The region extends from the Oregon border southward to Santa Barbara on the coast and inland eastward to the Sierra Nevada range Each 19" X 27" poster is carefully dry mounted, double matted