Materials include Marie McMillan's personal papers about her family and her careers from 1928 to 2010, with the bulk of the materials dating from 1975 to 1999. The series includes biographical materials, newspaper clippings, award certificates, programs, photographs, obituaries, scrapbooks, and plaques.

Materials document the life, career, and civil rights activities of Dr. James B. McMillan from 1935 to 2006. The series includes biographical information, awards and certificates, trophies, legal and military documents, newspaper articles, political campaign documents, photographs, and plaques.