- V L Farmer and E Shepherd-Wynn,
*Voices of Historical and Contemporary Black American Pioneers*, 4 volumes (ABC-CLIO, 2012).

- V Newell, J H Gipson, L W Rich and B Stubblefield (eds.),
*Black Mathematicians and Their Works*(Dorrance & Company, Ardmore, PA, 1980).**Articles:** - I Brown, William Claytor,
*Reflections: The UPenn Black History Project*(13 February 2012).

https://upennblackhistory.wordpress.com/2012/02/13/william-claytor/

- H S Deiss, Katherine Johnson: A Lifetime of STEM,
*NASA Educational Technology Services*(6 November 2013).

http://www.nasa.gov/audience/foreducators/a-lifetime-of-stem.html

- J A Donaldson, Black Americans in mathematics, in
*P L Duren et al. (eds.), A Century of Mathematics in America*Volume**3***(*American Mathematical Society, Providence, 1989), 449-469.

- J L Houston, William W Shieffelin Claytor 1908-1967,
*National Association of Mathematicians Newsletter*(Winter Issue, 1994).

- J L Houston, William W Shieffelin Claytor 1908-1967,
*SUMMA Archival Record, Mathematical Association of America*.

http://www.maa.org/programs/underrepresented-groups/summa/summa-archival-record/william-claytor

- P C Kenschaft, Black men and women in mathematical research,
*J. Black Stud.***18**(1987), 170-190.

- K H Parshall, Mathematics and the Politics of Race: The Case of William Claytor (Ph.D., University of Pennsylvania, 1933),
*Amer. Math. Monthly***123**(3) (2016), 214-240.

- Pioneer African American Mathematicians,
*Department of Mathematics, University of Pennsylvania*.

https://www.math.upenn.edu/about/department-history/pioneer-african-american-mathematicians

- William Claytor, A Mathematical Genius,
*African American Registry*.

http://www.aaregistry.org/historic_events/view/william-claytor-mathematical-genius

- S W Williams, William Schieffelin Claytor,
*Mathematicians of the African Diaspora, The Mathematics Department, State University of New York at Buffalo*.

http://www.math.buffalo.edu/mad/PEEPS/claytor_wschieffelin.html