990 propublica - SERP Analysis

https://projects.propublica.org/nonprofits/

https://www.propublica.org/reports

https://www.propublica.org/article/nonprofit-explorer-adds-a-million-new-form-990s

https://www.propublica.org/nerds/new-search-full-text-of-3-million-nonprofit-tax-records-for-free

https://candid.org/candid-search/verify-nonprofits/