Barbara Clark served in the Pacific during WWII as a member of the Woman's Army Corps. She returned to federal service in early 1951 with the Armed Forces Security Agency as a Special Research Analyst doing research and reporting. As a Senior research analyst at NSA with foreign language capability, Mrs. Clark served in four different production elements dealing with a wide range of international issues.

Although Mrs. Clark became a division chief in the Operations organization, she was best known throughout the Agency for her efforts to help others. She was heavily involved in NSA organizations that supported employees such as the International Affairs Institute, Women and Men in NSA, and the Phoenix Society.

Mrs. Clark passed away in 2003 while still active at NSA.