This continues a series adapted from the book, “A Port Oneida Collection,” Volume 1 of the twopart set, “Oral History, Photographs, and Maps from the Sleeping Bear Region,” produced by Tom Van Zoeren in partnership with Preserve Historic Sleeping Bear. Here we conclude a look at the North Unity School, along M-22 on Lake Narada.Laura Basch: “At our schoolhouse we had a ball. And we’d throw it —…