Le Timbre-Poste français, étude historique et anecdotique de la poste et du timbre en France et dans les colonies françaises. By Georges Brunel. New ed., with supplement. _Paris_, 1901.
GAMBIA. Gambia. By Fred. J. Melville. _London_, 1909.
GERMANY AND COLONIES. Die Aushülfsmarken von Tsingtau und ihre Fälschungen. By Gebrüder Senf. _Leipzig_, 1903.
Deutsche Reich-Post. By O. Rommel. _Leipzig_, 1893-6.
Illustrierter Spezial-Katalog der Deutschen Kolonialmarken und der Deutschen Postämter im Auslande. By Gebrüder Senf. _Leipzig_, 1907.
GIBRALTAR. Die Postwertzeichen von Gibraltar seit 1889. By W. Breimeier. _Leipzig_, 1892.
GREAT BRITAIN. Great Britain: Embossed Adhesive Stamps. By Fred J. Melville. _London_, 1910.
Great Britain: King Edward VII. Stamps. By Fred J. Melville. _London_, 1911.
Great Britain: Line-engraved Stamps. By Fred J. Melville. 2nd ed. _London_, 1910.
A History of the Adhesive Stamps of the British Isles. By H. E. Wright and A. B. Creeke, Jun. _London_, 1899. ⁂ Thirty-eight plates. With a Supplement. By A. B. Creeke, Jun. _London_, 1904. ⁂ One plate.
The Postage Stamps of Great Britain. By Fred J. Melville. _London_, 1904. ⁂ Eight plates.
The Postage and Telegraph Stamps of Great Britain. By F. A. Philbrick and W. A. S. Westoby. _London_, 1881.
The Postage Stamps of the United Kingdom, 1840-90. By W. A. S. Westoby. 2nd ed. _London_, 1892.
Standard Priced Catalogue of the Stamps and Postmarks of the United Kingdom. By H. L. Ewen. 6th ed. _London, S. E._, 1898.
GREECE. Les Emissions des Timbres Grecs. By Georges Brunel. _Paris_, 1909.
Die Postmarken von Griechenland. By A. E. Glasewald. _Gössnitz_, 1886-96. ⁂ Plates.
Die Postwerthzeichen von Griechenland. By A. E. Glasewald. _Gössnitz_, 1896.
The Stamps of Greece. By W. D. Beckton and G. B. Duerst. _Manchester_, 1897. ⁂ Three plates.
GRENADA. Grenada. By E. D. Bacon and F. H. Napier. _London_, 1900. ⁂ Nine plates.
GRIQUALAND. The Stamps of Griqualand West. By F. H. Napier. _Manchester_, 1903. ⁂ Two plates.
HAMBURG. Die Briefumschläge von Hamburg und Bremen. By C. Lindenberg. _Berlin_, 1894.
Hamburg (in German). By O. Rommel and H. Krötzsch. _Leipzig_, 1893-6.
Die Postwerthzeichen von Hamburg. By E. Heim. _Wien_, 1880.