* [https://www.gutenberg.org/files/14422/14422-h/14422-h.htm The Promise Of American Life, by Herbert David Croly], Full Text, [[Project Gutenberg]] | * [https://www.gutenberg.org/files/14422/14422-h/14422-h.htm The Promise Of American Life, by Herbert David Croly], Full Text, [[Project Gutenberg]] |