Brunswick. Die Postwerthzeichen des Herzogthums Braunschweig. By L. Berger. Braunschweig, 1893.

Die Briefumschläge von Braunschweig. By C. Lindenberg. Berlin, 1892.

Braunschweig. By O. Rommel and H. Krötzsch. Leipzig, 1893-6. ⁂ Four plates.

Campeche. Some Notes on the most remarkable Postage Stamp ever issued. By W. C. Bellows. New York, 1909.

Canada. The Postage Stamps of Canada. By C. A. Howes. Boston, 1911. ⁂ Fifteen plates.

Cape of Good Hope. Cape of Good Hope. By E. J. Nankivell. Tunbridge Wells, 1909.

Cayman Islands. The Cayman Islands: Their Stamps and Post Office. By D. Armstrong, C. Bostwick, and A. Watkin. London, 1910. ⁂ Two plates.

Jamaica and the Cayman Islands. By E. J. Nankivell. Tunbridge Wells, 1908.

Ceylon. The Postage Stamps, Envelopes, Wrappers, Post Cards, and Telegraph Stamps of British India and Ceylon. [The Philatelic Society, London.] London, 1892.

Chili. Estudios de la filatelia de Chile. By R. Aguirre Mercado. Coquimbo, 1905.