The Telegraph Chronicle. London.
The Postal and Telegraph Record. Manchester.
Telephone Journal. London.
St. Martin's-le-Grand Magazine. London.
Parliamentary and Official Papers.
Tenth Report of the Commissioners appointed by Act of Parliament to inquire into the Fees, Gratuities, Perquisites, and Emoluments, which are or have been lately received in the several Public Offices therein mentioned. 1788.
Report of the Committee on Mr. Palmer's Agreement. 1797.
Twentieth and Twenty-first Reports of the Commissioners of
Inquiry into the Collection and Management of the Revenue arising in Ireland and Great Britain. 1830.
The Ten Reports of the Commissioners for Inquiry into the Mode of Conducting the Business of the Post Office Department. 1834-38.