I have not read every one of Edwin Way Teale's many books, of which the one I have just finished, A Conscious Stillness, was his last. He did not live to see this book published; he didn't even live to compile his notes, much less produce a manuscript. During his final year of life, he and Ann Zwinger, a fellow naturalist, had been canoeing two Massachusetts rivers, the Sudbury and the Assabet, intending to combine their individual and shared experiences in book form. But then he died. With the aid of Edwin's widow, Nellie Donovan Teale, Ann completed the project after Edwin's death, using his notes as well as her own.