After 30 years of research and seven years of editing comes this lavishly illustrated hardcover set of seven volumes (each 500 to 600 pages) comprehensively documenting all apple varieties that have appeared in publications in the United States and Canada: 16,350 varietal listings (descriptions, origins, and histories), 9,700 synonyms (other names the apples were known by in different locations), 1,650 cited references (more than two centuries of pomological literature on apples) and 1,400 life-size watercolors (painted a century ago for color documentation).