Letter to his brother Robertson of the Financial Reform Association at Liverpool in 1859. "Gladstone as Financier and Economist" by F. W. Hirst, p. 241, 1931.
"The Federal and State Constitutions Colonial Charters, and Other Organic Laws of the States, Territories, and Colonies Now or Heretofore Forming the United States of America" compiled and edited by Newton Thorpe, Washington, DC : Government Printing Office, 1909.