GB Stamps - British Philatelic Bulletin - Vol 35 # 6 - February 1998
GB Stamps - British Philatelic Bulletin - Vol 40 # 1 - September 2002
GB Stamps - British Philatelic Bulletin - Vol 24 # 4 - December 1986
GB Stamps - British Philatelic Bulletin - Vol 43 # 7 - March 2006
GB Stamps - British Philatelic Bulletin - Vol 25 # 12 - August 1988
GB Stamps - British Philatelic Bulletin - Vol 13 # 7 - March 1976
GB Stamps - British Philatelic Bulletin - Vol 23 # 5 - January 1986
GB Stamps - British Philatelic Bulletin - Vol 32 # 12 - August 1995
GB Stamps - British Philatelic Bulletin - Vol 52 # 8 - April 2015
GB Stamps - British Philatelic Bulletin - Vol 35 # 2 - October 1997
GB Stamps - British Philatelic Bulletin - Vol 31 # 7 - March 1994
GB Stamps - British Philatelic Bulletin - Vol 22 # 6 - February 1985
GB Stamps - British Philatelic Bulletin - Vol 33 # 5 - January 1996
GB Stamps - British Philatelic Bulletin - Vol 42 # 10 - June 2005
GB Stamps - British Philatelic Bulletin - Vol 36 # 6 - February 1999
GB Stamps - British Philatelic Bulletin - Vol 36 # 3 - November 1998
GB Stamps - British Philatelic Bulletin - Vol 44 # 3 - November 2006
GB Stamps - British Philatelic Bulletin - Vol 18 # 11 - July 1981
GB Stamps - British Philatelic Bulletin - Vol 42 # 5 - January 2005
GB Stamps - British Philatelic Bulletin - Vol 23 # 12 - August 1986
GB Stamps - British Philatelic Bulletin - Vol 21 # 7 - March 1984
GB Stamps - British Philatelic Bulletin - Vol 34 # 2 - October 1996
GB Stamps - British Philatelic Bulletin - Vol 50 # 10 (2) - July 2013
GB Stamps - British Philatelic Bulletin - Vol 41 # 3 - November 2003
GB Stamps - British Philatelic Bulletin - Vol 10 #12 - August 1973
GB Stamps - British Philatelic Bulletin - Vol 37 # 7 - March 2000
GB Stamps - British Philatelic Bulletin - Vol 15 # 6 - February 1978
GB Stamps - British Philatelic Bulletin - Vol 36 # 12 - August 1999
GB Stamps - British Philatelic Bulletin - Vol 31 # 10 - June 1994
GB Stamps - British Philatelic Bulletin - Vol 15 # 11 - July 1978
GB Stamps - British Philatelic Bulletin - Vol 11 #3 - November 1973
GB Stamps - British Philatelic Bulletin - Vol 16 # 4 - December 1978
GB Stamps - British Philatelic Bulletin - Vol 29 # 4 - December 1991
GB Stamps - British Philatelic Bulletin - Vol 33 # 9 - May 1996
GB Stamps - British Philatelic Bulletin - Vol 52 # 2 - October 2014
GB Stamps - British Philatelic Bulletin - Vol 48 # 11 - July 2011
GB Stamps - British Philatelic Bulletin - Vol 22 # 11 - July 1985
GB Stamps - British Philatelic Bulletin - Vol 31 # 4 - December 1993
GB Stamps - British Philatelic Bulletin - Vol 31 # 11 - July 1994
GB Stamps - British Philatelic Bulletin - Vol 50 # 2 - October 2012