Dr John HORSEY, The £5 Orange. London: Stanley Gibbons, 2013. 291pp.
H. T. JACKSON, The Preparation of the Post Office Telegraph Stamps of GB. 34pp.
--- The Post Office Telegraph Stamps of Great Britain 1869-1881.
Peter LANGMEAD and Alan HUGGINS, The Telegraph Stamps and Stationery of Great Britain (1851-1952). GBPS, 2003. 190pp.
Raymond LISTER, Private Telegraph Companies of Great Britain and their Stamps. Cambridge: The Golden Head Press Ltd, 1961. 58pp.
A. MCDONALD, Telegraph Stamps of Great Britain, The. London: McDonald, 1959. 42pp.
F. A. PHILBRICK and W. A. S. WESTOBY, An Appendix to the Postage and Telegraph Stamps of Great Britain (stapled photocopy). 9pp.
Hastings E. WRIGHT and A. B. CREEKE JNR, A History of The Adhesive Stamps of The British Isles available for Postal and Telegraph purposes. London: The Philatelic Society, 1899. 263pp. (Bound with 1903 supplement)