In his seventh collection of essays, The Patch, master non-fiction writer John McPhee shares a montage of stories and reflections that range from a visit to the Hershey chocolate factory to encounters with Oscar Hammerstein, Joan Baez, and Mount Denali. Calling on his signature devotion to structure, McPhee has winnowed this body of work to present a random assembly he calls an "album quilt," a memoir as only he could write it. He spoke with Paul Holdengräber about the arc of his life and career.