- Sigma Kappa Sorority was founded November 9, 1874 at Colby College in Waterville, Maine.
- Delta Sigma Chapter was founded September 26, 1959 at Western Illinois University in Macomb, Illinois.
Founders:
Mary Caffrey Low Carver
Elizabeth Gorham Hoag
Francis Mann Hall
Ida Fuller Pierce
Louise Hellen Coburn
Open Motto: One Heart, One Way
Colors: Maroon and Lavender
Jewel: Pearl
Symbols: Heart 
Flower: Violet 
Collegiate Chapters: 107 in 36 states
Alumnae Chapters: 126 in 40 states
Members: 148,592 worldwide
Philanthropies: Gerontology (the study of aging), with a focus on Alzheimer's disease research and programs directed at improving the lives of older citizens; Inherit the Earth; Maine Seacoast Mission.