Society editor for the Miami Herald, circa World War I, and a freelance writer between the world wars, Douglas wrote the classic Everglades: River of Grass in 1947 and launched a new career as conservationist. At 97, Douglas is still a potent force in Florida's environmental politics. With Rothchild, author of Up for Grabs, she here talks about her life; he has edited some 200 hours of tapes for a delightful portrait of an indomitable lady. Douglas's parents separated when she was six, and she grew up in New England with her mother's family. After graduating from Wellesley, she was married briefly, then, in 1915, joined her father in Miami and began her writing career. Rothchild gives us an affectionate introduction to the "tiny woman in the floppy hat." Photos.