Charter Brother Cook was born in Washington D.C. on October 20, 1887. His father, Samuel Sr., was a physician and native of Washington, D.C. Samuel, Sr. passed away when Cook was three years old. Then Cook and his mother, Florella Robinson, a native of South Carolina, moved to Norfolk, Va. The Cooks were one of the more affluent families of Washington, D.C.,
He attended Howard University as an undergraduate student and later would attend University of Illinois medical school, graduating in 1913. While a medical student Cook was roommates with Theta Charter Brother Thomas Boger.
Following his matriculation at Rush, Cook began his internship at Provident Hospital and then completed it at Freedman’s Hospital in Washington, D.C.
Shortly after relocating to the D.C. area, , Charter Brother Cook got married, however his wife passed away sometime prior to 1920. Later, he would remarry a schoolteacher named Louise Sewell in the early 1920’s.
He then went on to become a member of the medical faculty at Howard University and was the clinical assistant professor of obstetrics and gynecology. In his 38 years of practice, he performed more than 5,000 major operations, most of them at Freedman’s Hospital.
Charter Brother Cook entered Omega Chapter on June 12, 1952.