Apple expert and “fruit explorer” John Bunker ’72 will demonstrate his expertise in a presentation titled, “In Search of the Oldest Apples in Maine: What They Teach Us about the Past, Present, and Future” Tuesday, Oct. 7, in Belfast. He will describe his adventures tracking down, identifying, and preserving rare historic varieties of apples in Waldo County and beyond. Bunker has been farming in Maine for more than 40 years.