Lee, John. Economics of Telegraphs and Telephones. London, 1913.

Leroy-Beaulieu, P. Traité de la Science des Finances. Paris, 1899.

McCulloch, J. R. Taxation and the Funding System. London, 1863.

Merritt, A. N. Scope of Government Functions. Journal of Political Economy, Chicago, July 1908.

Meyer, H. R. Public Ownership and the Telephone in Great Britain. New York, 1907.

Northcote, Stafford. Twenty Years of Financial Policy. London, 1862.

Parnell, Sir H. On Financial Reform. London, 1832.

Plehn, C. C. Introduction to Public Finance. New York, 1909.

Ripley, W. Z. Railway Problems. Boston, U.S.A., 1907.