Sellers was born in 1911 and grew up in Charlottesville and nearby Esmont, Virginia. For a time he attended Esmont High School and in 1930, was a member of the first class of African American students to graduate from an accredited high school in the Charlottesville area, the Jefferson School. Remembering his school experience in a 1977 editorial in
The New York Times, Sellers described the racist environment in which the small, all-female faculty of Jefferson High School taught him. Sellers' wife, Eleanor, later became an English teacher at Jefferson High School. The couple were prominent members of Charlottesville's African American community until they moved north in the early 1950s. They had a daughter, Thomasine, in 1942. In the 1940s, Sellers was employed as the Charlottesville superintendent of the Richmond Beneficial Insurance Company. Sellers was a strong voice for African American representation in both Charlottesville and Commonwealth politics, and advocated tirelessly for black issues through the
Jim Crow era. Along with other prominent local African Americans, he was present at the hearing on September 9, 1950, when the
University of Virginia was forced to admit its first African American student,
Gregory Swanson, to the school of Law. Sellers's influence—and vocal criticism—led budding white civil rights activist
Sarah Patton Boyle to seek his advice. Sellers became Boyle's mentor in her quest to support school integration in Charlottesville, and Boyle discusses Sellers's personality, words, and actions in depth in her memoir,
The Desegregated Heart. In 1953, the Sellers family moved to New York. In New York, he attended
New York University where he received his B.A in the early 1950s. He also entered NYU's graduate program in Supervision and Administration. In the 1960s he taught at P.S.175, where the curriculum included African American history, which was not common at the time. He continued teaching into the 1970s and then worked in education administration in the northeast Bronx, serving as a special assistant to a Community School District Superintendent and Director of Education Information Services and Public Relations. In 1974, he was the speaker for the Charlottesville branch of the N.A.A.C.P.'s presentation on "U.S. Supreme Court School Desegregation Decision - Twenty Years After". He was a member of the Education Writers Association and the National School Public Relations Association. == Newspaper career ==