Vol 13 Number 4, December 1975
16. Tercentenary of the General Letter Office 1960 , Vol.13 No.4 (1975)Vol 13 Number 5, January 1976
17. First Anniversary of European Postal and Telecommunications Conference 1960 , Vol.13 No.5 (1976)Vol 13 Number 7, March 1976
Aerogrammes - Part One , Vol.13 No.7Vol 13 Number 8, April 1976
Aerogrammes - Part Two , Vol.13 No.8Vol 13 Number 9, May 1976
Aerogrammes - Part Three , Vol.13 No.9Vol 13 Number 10, June 1976
Aerogrammes - Part Four , Vol.13 No.10Vol 13 Number 11, July 1976
Aerogrammes - Part Five , Vol.13 No.11