Birds and Trees of North America is Rex Brasher's seminal work, comprised of 874 watercolor paintings bound in an encyclopedic set. Between 1929 and 1932, he created 100 twelve-volume sets—1,200 individual books—and sent them to patrons across North America. Volume 11 contains 92 birds, including warblers, wagtails, pipits, dippers, and thrashers.