WASHINGTON — Mary D. Janney, a former history teacher who was a founder of Wider Opportunities for Women, a Washington-based career resource center that has helped thousands of women find work, died Oct. 7 at George Washington University Hospital. She was 91 and had complications from a hip fracture.

After settling in Washington in 1949, Mrs. Janney taught history at the private Potomac School in McLean, Va., for a dozen years, raising two sons.