https://www.prospectmagazine.co.uk/wp-content/uploads/2017/12/Tooze_feature_app_1.pdf
https://www.propublica.org/article/how-private-nonprofits-ultrawealthy-tax-deductions-museums-foundation-art
https://www.federalreserve.gov/newsevents/speech/files/powell20200827a.pdf