The Post Office telegraph stamps of Great Britain: 1875-1881 : a display given to the GBPS at the Royal Philatelic Society London, 22nd February 2020 /
Pinwill, Ian,author.
Lawrie, Stephen,1950-2019.
Ramsay, Paul,1953-
Royal Philatelic Society (Great Britain),host institution.
Great Britain Philatelic Society.
"Based on the Post Office telegraphs website, databases and collections of: Mr. Stephen Lawrie, Dr. Ian Pinwill, Dr. Paul Ramsay".