https://owlcation.com/humanities/john-donnes-holy-sonnet-ix-if-poisonous-minerals-and-if-that-tree
John Donne's Holy Sonnet IX "If poisonous minerals, and if that tree"
https://discover.hubpages.com/literature/edgar-lee-masters-andy-the-night-watch
Edgar Lee Masters’ "Andy the Night-Watch"