Lippincott started his architectural career with
Oscar Stonorov near Philadelphia in 1948 from 1951. From 1952 to 1965, Lippincott lectured on architectural engineering at the
University of Pennsylvania Graduate School of Fine Arts. The firm received several design and preservation awards. In 1978, Lippincott designed the Friends' Center on Cherry Street in Philadelphia. This project included designing the headquarters for the national Quaker organization along with a conference center. The new complex connects with the historic Quaker meetinghouse that was built by Lippincott's great-great-grandfather. In 1985, he designed the municipal building for
Birmingham Township, Pennsylvania. After he retired, Lippincott oversaw the renovation of the
St. Anthony Hall House at the University of Pennsylvania. Lippincott became a fellow of the
American Institute of Architects in 1972. He was president of the Philadelphia chapter of AIA in 1969. == Personal life ==