Natasha Trethewey, the newly named United States poet laureate, will write a memoir, her publisher said. Ms. Trethewey, below, a Mississippi born African-American who is the first Southerner to be appointed poet laureate since Robert Penn Warren, chose Ecco, an imprint of HarperCollins, as her publisher after a heated auction. She will begin as poet laureate in September. The book maps “the intersections of personal and cultural history as it navigates the channels and byways of memory and race in America,” her publisher said. Daniel Halpern, the president and publisher of Ecco, said in a statement: “I can’t remember a more emotionally intense auction for a book, ever. I truly admire Natasha’s spirit, her graceful presence on these pages, which tell a story that no one is likely to forget.” The book is tentatively scheduled for release in 2014.