Memorial service for Sarah Pillsbury Harkness

A memorial service to celebrate the life and work of Sarah Pillsbury Harkness will be held at 2 p.m. Saturday in Follen Church in Lexington.

Mrs. Harkness, known as Sally, was a founding member of The Architects Collaborative and a longtime resident of the Six Moon Hill neighborhood the firm designed in Lexington. She died May 22 at 98.