Federal Reserve Bank of Boston. "2018 Annual Report : Financial Statements as of and for the Years Ended December 31, 2018 and 2017 and Independent Auditors' Report," Annual Report of the Federal Reserve Bank of Boston (as of December 31, 2018). https://fraser.stlouisfed.org/title/465/item/678208/content/pdf/2018_frbboston_annualreport_financials, accessed on March 9, 2026.