Wilfred Owen, one of the finest poets of World War I, was also one of its most-mourned casualties. The poet was survived not only by the verse upon which his reputation is founded, but also by the thousands of letters he wrote from the age of five to the eve of his death at the age of twenty-five. Selected Letters of Wilfred Owen includes some early examples, but concentrates on the correspondence of the poet's last seven years--the period in which...