GB Stamps - British Philatelic Bulletin - Vol 28 # 10 - June 1991
GB Stamps - British Philatelic Bulletin - Vol 34 # 3 - November 1996
GB Stamps - British Philatelic Bulletin - Vol 39 # 12 - August 2002
GB Stamps - British Philatelic Bulletin - Vol 28 # 11 - July 1991
GB Stamps - British Philatelic Bulletin - Vol 40 # 9 - May 2003
GB Stamps - British Philatelic Bulletin - Vol 40 # 6 - February 2003
GB Stamps - British Philatelic Bulletin - Vol 37 # 9 - May 2000
GB Stamps - British Philatelic Bulletin - Vol 18 # 10 - June 1981
GB Stamps - British Philatelic Bulletin - Vol 26 # 8 - April 1989
GB Stamps - British Philatelic Bulletin - Vol 38 # 9 - May 2001
GB Stamps - British Philatelic Bulletin - Vol 30 # 2 - October 1992
GB Stamps - British Philatelic Bulletin - Vol 38 # 12 - August 2001
GB Stamps - British Philatelic Bulletin - Vol 29 # 5 - January 1992
GB Stamps - British Philatelic Bulletin - Vol 32 # 1 - September 1994
GB Stamps - British Philatelic Bulletin - Vol 47 # 8 - April 2010
GB Stamps - British Philatelic Bulletin - Vol 47 # 1 - September 2009
GB Stamps - British Philatelic Bulletin - Vol 29 # 9 - May 1992
GB Stamps - British Philatelic Bulletin - Vol 32 # 7 - March 1995
GB Stamps - British Philatelic Bulletin - Vol 50 # 9 - May 2013
GB Stamps - British Philatelic Bulletin - Vol 38 # 11 - July 2001
GB Stamps - British Philatelic Bulletin - Vol 30 # 1 - September 1992
GB Stamps - British Philatelic Bulletin - Vol 34 # 6 - February 1997
GB Stamps - British Philatelic Bulletin - Vol 40 # 2 - October 2002
GB Stamps - British Philatelic Bulletin - Vol 38 # 7 - March 2001
GB Stamps - British Philatelic Bulletin - Vol 35 # 9 - May 1998
GB Stamps - British Philatelic Bulletin - Vol 33 # 3 - November 1995
GB Stamps - British Philatelic Bulletin - Vol 32 # 2 - October 1994
GB Stamps - British Philatelic Bulletin - Vol 21 # 9 - May 1984
GB Stamps - British Philatelic Bulletin - Vol 15 # 8 - April 1978
GB Stamps - British Philatelic Bulletin - Vol 44 # 1 - September 2006
GB Stamps - British Philatelic Bulletin - Vol 47 # 6 - February 2010
GB Stamps - British Philatelic Bulletin - Vol 33 # 7 - March 1996
GB Stamps - British Philatelic Bulletin - Vol 47 # 5 - January 2010
GB Stamps - British Philatelic Bulletin - Vol 16 # 12 - August 1979
GB Stamps - British Philatelic Bulletin - Vol 49 # 9 - May 2012
GB Stamps - British Philatelic Bulletin - Vol 25 # 7 - March 1988
GB Stamps - British Philatelic Bulletin - Vol 44 # 4 - December 2006
GB Stamps - British Philatelic Bulletin - Vol 19 # 8 - April 1982
GB Stamps - British Philatelic Bulletin - Vol 37 # 2 - October 1999
GB Stamps - British Philatelic Bulletin - Vol 45 # 3 - November 2007