Mrs. Lewis taught science at Roland Park Country School from 1983 until 1988, when she retired.
In recent years, the couple lived at a condominium on Greenway, and were active communicants of Memorial Episcopal Church in Bolton Hill. Mrs. Lewis also volunteered with a Sandtown-Winchester group.
She enjoyed traveling and hiking and was an avid bird watcher.
A memorial service for Mrs. Lewis will be held at 10:30 a.m. Tuesday at her church, 1407 Bolton St.
In addition to her husband, a retired Gilman School physics teacher, she is survived by a son, Walker Lewis of Brooklyn, N.Y.; a daughter, Catherine “Kate” Lewis Kenddi of Auckland, New Zealand; a sister, Judy Grove of De Graff, Ohio; and two grandchildren.