GB Stamps - British Philatelic Bulletin - Vol 29 # 12 - August 1992
GB Stamps - British Philatelic Bulletin - Vol 36 # 8 - April 1999
GB Stamps - British Philatelic Bulletin - Vol 20 # 7 - March 1983
GB Stamps - British Philatelic Bulletin - Vol 43 # 6 - February 2006
GB Stamps - British Philatelic Bulletin - Vol 16 # 9 - May 1979
GB Stamps - British Philatelic Bulletin - Vol 36 # 11 - July 1999
GB Stamps - British Philatelic Bulletin - Vol 40 # 5 - January 2003
GB Stamps - British Philatelic Bulletin - Vol 44 # 5 - January 2007
GB Stamps - British Philatelic Bulletin - Vol 38 # 1 - September 2000
GB Stamps - British Philatelic Bulletin - Vol 23 # 2 - October 1985
GB Stamps - British Philatelic Bulletin - Vol 30 # 12 - August 1993
GB Stamps - British Philatelic Bulletin - Vol 48 # 4 - December 2010
GB Stamps - British Philatelic Bulletin - Vol 41 # 5 - January 2004
GB Stamps - British Philatelic Bulletin - Vol 33 # 8 - April 1996
GB Stamps - British Philatelic Bulletin - Vol 35 # 3 - November 1997
GB Stamps - British Philatelic Bulletin - Vol 19 # 6 - February 1982
GB Stamps - British Philatelic Bulletin - Vol 14 # 5 - January 1977
GB Stamps - British Philatelic Bulletin - Vol 29 # 10 - June 1992
GB Stamps - British Philatelic Bulletin - Vol 21 # 8 - April 1984
GB Stamps - British Philatelic Bulletin - Vol 34 # 11 - July 1997
GB Stamps - British Philatelic Bulletin - Vol 41 # 7 - March 2004
GB Stamps - British Philatelic Bulletin - Vol 28 # 7 - March 1991
GB Stamps - British Philatelic Bulletin - Vol 30 # 7 - March 1993
GB Stamps - British Philatelic Bulletin - Vol 39 # 3 - November 2001
GB Stamps - British Philatelic Bulletin - Vol 13 # 10 - June 1976
GB Stamps - British Philatelic Bulletin - Vol 17 # 5 - January 1980
GB Stamps - British Philatelic Bulletin - Vol 15 # 1 - September 1977
GB Stamps - British Philatelic Bulletin - Vol 13 # 4 - December 1975
GB Stamps - British Philatelic Bulletin - Vol 43 # 10 - June 2006
GB Stamps - British Philatelic Bulletin - Vol 15 # 10 - June 1978
GB Stamps - British Philatelic Bulletin - Vol 26 # 2 - October 1988
GB Stamps - British Philatelic Bulletin - Vol 39 # 2 - October 2001
GB Stamps - British Philatelic Bulletin - Vol 26 # 1 - September 1988
GB Stamps - British Philatelic Bulletin - Vol 10 #8 - April 1973
GB Stamps - British Philatelic Bulletin - Vol 29 # 2 - October 1991
GB Stamps - British Philatelic Bulletin - Vol 17 # 4 - December 1979
GB Stamps - British Philatelic Bulletin - Vol 40 # 7 - March 2003
GB Stamps - British Philatelic Bulletin - Vol 22 # 10 - June 1985
GB Stamps - British Philatelic Bulletin - Vol 43 # 5 - January 2006
GB Stamps - British Philatelic Bulletin - Vol 15 # 3 - November 1977