Women hikers and campers are as common as men these days, or so it seems, but 100 years ago? My grandmother-in-law was one, a concept I could not imagine until I saw the evidence that didn’t fit my stereotype of Edith Banister Cordes — until someone dropped the notion in my lap. Ede, as she was known by her friends at the time, was the older sister of Jud Banister, the East Hampton Village mayor from 1936 to 1954.