Paul Pfeiffer Jr., 99, co-founder of the now-defunct Exacta Business Services, a financial and administrative services company in Washington, died April 11 after suffering complications from a fall. His wife of 52 years, Jane G. Pfeiffer, 92, who co-founded the business with her husband and once served as an assistant to Nobel Peace laureate Ralph Bunche, died May 6 of complications from breast cancer.

Both died at their home at the Residences at Thomas Circle in Washington. Their deaths were confirmed by their friend and executor, Ann Roberts Rosenthal.

The Pfeiffers established Exacta Business Services in 1970. The company, managed from their Washington home, provided editing, financial and office services to businesses. The company closed in 2006.

Paul Pfeiffer Jr. was born in Evansville, Ind., and grew up in Springfield, Ohio. He received a bachelor’s degree from Wittenberg University in Ohio in 1935. He briefly worked as a teacher in Springfield before moving to Washington for an academic internship in 1936.

Early in his career, he worked for the Federal Savings and Loan Insurance Corp. and the Federal Home Loan Bank Board.

He served in the Navy in the Pacific during World War II, including the battles of the Leyte Gulf and Okinawa. His memberships included the social fraternity Phi Gamma Delta, and he was a Red Cross volunteer.

Jane Grey Wheeler was born in Summit, N.J. She was a 1941 graduate of Brown University, and she received a master’s degree from Tufts University’s Fletcher School of Law and Diplomacy in 1943.

She moved to Washington and worked two years at the State Department as a research assistant for Bunche, a U.S. representative to the United Nations and the first African American to win the Nobel Peace Prize. She traveled with Bunche when he participated in a San Francisco conference at which the U.N. charter was drafted and signed.

From 1945 to 1957, Mrs. Pfeiffer was an administrative and research assistant to the Rev. A. Powell Davies, then the minister of All Souls Church Unitarian in Washington, who was a civil rights activist in the 1950s.

Mrs. Pfeiffer was a community organizer for a D.C. commissioners’ youth council and a member of the Democratic Women’s Club in the District. She headed a healing program at the Institute for Spiritual Development (ISD) in Washington and was ordained as an ISD minister in 1997.

Mr. and Mrs. Pfeiffer were very active at All Souls Church and contributed interviews to an upcoming documentary about Davies. Mr. Pfeiffer was also a past committee chair of the A. Powell Davies Memorial Fund.

There were no immediate survivors.

— Megan McDonough