Harriet Pattison, RLA, FASLA, an award-winning landscape architect, known for her work with Louis Khan on the Franklin D. Roosevelt Four Freedoms Park in New York, the Kimbell Art Museum in Fort Worth, Texas, and the Hershey's Corporate Campus in Pennsylvania, died on October 3 in her Newton Square, Pennsylvania home. She was 94 years old.

 
Pattison was born in 1928 in Chicago, Illinois to a middle-class family and was the youngest of seven children. She attended the University of Chicago, where she received her bachelor's degree in 1951. The icon did not immediately take to landscape architecture but, she was on track to become an actor and had even applied to Yale University's School of Drama where she was enrolled as a scene director.

In 1958 however, she met Louis Kahn who encouraged her to pursue landscape architecture. Kahn and Pattison went on to have a professional and personal relationship that lasted until his death in 1974. They had one child together, filmmaker, Nathaniel Kahn.

In 1963, she interned in Dan Kiley's office before enrolling in a graduate program. Pattison then received her master's degree from University of Pennsylvania's design program in 1967. She also worked for landscape architect George Erwin Patton, who was known for his work with Simonds & Simonds in Pittsburgh and the George E. Patton firm in Philadelphia on projects such as University of Pennsylvania and Swarthmore College.

After Kahn's death, she opened her own office in Philadelphia where she worked on some of her best work including the Columbia Avenue Station in North Philadelphia and became a prolific landscape architect.

She was elevated to a fellow of the American Society of Landscape Architects (ASLA) in 2016.