“An Adventure Story for Girls” Marian and Lucille seem to be in for the time of their lives ... in the worst sense. First, they find a boy who seems exhausted from swimming, who must have been lost overboard from another boat. Taking him to their camp, they feed him and watch him fall asleep by the fire. Then, later in the night, they hear a strange sound ... and discover the boy is gone—and along with him is their rowboat! Two young girls, trapped on an island off Alaska! "The Blue Envelope" is a novel of danger and startling adventure, and of two girls who have the wits and stamina to face anything Fate throws at them!