- How sure this is
- 95% sureThese words were traced back to where they first appeared. That source is listed below.
- What turned up
- The Souls of Black Folk (1903), Chapter IV, 'Of the Meaning of Progress' — grepped verbatim in the staged Gutenberg text (id 408).
- Work
- The Souls of Black Folk
- Occasion
- 1903 · Chapter IV, recalling the one-room school Du Bois taught as a young man.
- Sources checked
- gutenberg.orgChecked using claude-sonnet-5, 21 August 2026Project Gutenberg #408, The Souls of Black Folk