https://www.peoplesworld.org/article/paul-robeson-day-is-now-an-official-holiday-in-washington-d-c/
https://www.zinnedproject.org/news/tdih/paul-robeson-testifies-before-huac/
https://www.rosalux.de/en/news/id/50247/paul-robeson-the-lefts-tragic-hero
https://alba-valb.org/resource/who-was-paul-robeson/
https://www.pbs.org/wgbh/americanexperience/features/oneill-controversial-play/