http://nationalhumanitiescenter.org/pds/gilded/people/text3/alger.pdf
https://learn-us-east-1-prod-fleet02-xythos.content.blackboardcdn.com/5c1754ad402d4/16818707?X-Blackboard-Expiration=1631383200000&X-Blackboard-Signature=1Qb2x%2BMo3MoOGLZGm1cT8G5PVnUOsLpPhg6LlxeU1fM%3D&X-Blackboard-Client-Id=304096&response-cache-control=private%2C%20max-age%3D21600&response-content-disposition=inline%3B%20filename%2A%3DUTF-8%27%27THE_GOSPEL_OF_WEALTH_01.pdf&response-content-type=application%2Fpdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20210911T120000Z&X-Amz-SignedHeaders=host&X-Amz-Expires=21600&X-Amz-Credential=AKIAZH6WM4PL5SJBSTP6%2F20210911%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=c8b0a8bc9c038082b4f77f9340a00ec89c77507d4fb24e6f33cefa2e9aa46eb2
https://sourcebooks.fordham.edu/mod/spencer-darwin.asp
