1. Ransom Roger L. , and Sutch Richard , “Domestic Saving as an Active Constraint on Capital Formation in the American Economy, 1839–1928: A Provisional Theory,” Working Papers on the History of Saving, No. 1 (12. 1984).
2. Philadelphia Saving Fund Society, Accounts, Hagley Museum and Library, Wilmington, DE, accession no. 2060.