Mr. Cunningham mentored a generation of architects.
Charles Capaldi, an architect who worked with Mr. Cunningham at GBQC, said he gave moral support and guidance to young architects during his career.
Mr. Cunningham "focused on project management and construction," Capaldi said. "He was a great mentor in the office to many, many architects. He was as well-respected among architects, engineers, contractors, and clients."
He retired as a partner in 1994 but continued to work for the firm until it closed in 2006.
In 1996, Mr. Cunningham received the American Institute of Architects' John Frederick Harbeson Award, which is given annually to a member for his significant contributions to the architectural profession over a lifetime.
Warren William Cunningham was born Oct. 4, 1922, in Philadelphia. He graduated from Germantown Academy and earned a bachelor's degree in architecture at the University of Pennsylvania.
During World War II, he served as a Navy pilot in the Pacific theater. He served in the Navy Reserve for 20 years. Mr. Cunningham also worked as a lifeguard in Ocean City, N.J.
In 1950, he married Jo Ann Jones. They had three daughters. Mrs. Cunningham died in 1991.
Mr. Cunningham is survived by his daughters, Diana Lynn Berndt, Robin Weir, and Darcy Connor; six grandchildren; and six great-grandchildren.
A memorial service is being planned.
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