Mary Peters Fieser (May 27, 1909 – March 22, 1997) was an American chemist best known for the many books she wrote with her husband Louis Fieser.She was born Mary Peters in 1909 in Atchison, Kansas. Her father, Robert Peters, was a college professor of English: the family later moved to Harrisburg, Pennsylvania, when he accepted a position at the Carnegie Institute of Technology (now Carnegie Mellon University).