Dorothy Kulp Gerson, 99, a former music teacher at what was Springside School in Chestnut in Chestnut Hill, died Dec. 30 of respiratory failure at Spring House Estates, a retirement community in Lower Gywnedd.

Until her retirement in the 1980s, Mrs. Gerson was coordinator of instrumental music and choral conductor at the school. She began at Springside as a music volunteer in the 1960s.

Mrs. Gerson also had been a music teacher and program director for18 years at Camp Med-O-Lark in Washington, Maine, and served on the board of Settlement Music School in Philadelphia.

She had been a member since 1982 of the Society of the Companions of the Holy Cross, an Episcopal and Anglican women’s organization. She was a summer organist at the society’s Adelynrood Retreat and Conference Center in Byfield, Mass.

She is survived by daughters Barbara Machler and Katherine DeBolt, and a grandson. Her husband, Robert, died in 1995.

A memorial service was held March 22 at Spring House Estates. – WF