William G. Tapply, author of the Boston lawyer-turned crime-solver Brady Coyne mystery series, died of leukemia Tuesday, July 28 at his Hancock, NH home. He was 69. He was known also for his collected essays, a book about his father, and his articles and columns in "Field & Stream" and other magazines. Mr. Tapply had also introduced a new series featuring Stoney Calhoun in 2004. The third book in this series will be published posthumously, this fall.