Mary Caffrey Low Carver was the first woman to attend Colby College, the first name on the roll of Sigma Kappa, and the first to preside at an Initiation. She graduated in July 1875. Although highest in rank, it was not customary for a woman to give either the valedictory or the salutatory address and therefore she was permitted to give the Class Prophecy. After graduation from Colby College, she married and taught school. Her daughter was later initiated into Sigma Kappa and later became the national president of Sigma Kappa. Even after her college years, she was determined to maintain her Sigma Kappa promise and was consulted on everything from furniture selection to the decision to extend Sigma Kappa beyond Colby's walls. She died in 1926.

Elizabeth Gorham Hoag was an only child and entered Colby College at the age of 17. She loved languages and literatures. She designed the first Sigma Kappa emblem. During the winter of her sophomore year, she grew frail with what we now know as tuberculosis. She died at the age of 18 in 1875.

Ida Mabel Fuller Pierce was 20 years old when she decided to attend Colby College. She refused to, in her own words, "accept her sex as irrefutable condemnation to a subordinate position in life." She was the practical voice in the early planning of Sigma Kappa. She left college in her junior year and moved to Kansas. She became a successful businesswoman, founded a hotel for girls in Kansas City, and was vice president of a bank. She continued to include Sigma Kappa in her life and helped found Xi chapter and served as housemother for several years. She died in 1933.

Louise Helen Coburn was the second woman to graduate from Colby College. She was a scholar, writer, and poet. She wrote most of the Initiation ceremony. Her sister, two of her nieces, and her nephew's wife all joined Sigma Kappa. As she grew older, she was bedridden and died in 1949.

Frances Elliott Mann Hall was a high school teacher before attending Colby College. She also had to leave college her junior year. She was proud to be the first Sigma Kappa who married. She died in 1935.