1996
Joan Clarke, English cryptanalyst and numismatist (born 1917)
Joan Clarke, English cryptanalyst and numismatist (born 1917)
Joan Clarke, English cryptanalyst and numismatist (born 1917)
English cryptanalyst (1917–1996)
Joan Clarke, English cryptanalyst and numismatist (born 1917)
Joan Clarke, English cryptanalyst and numismatist (born 1917)
Joan Clarke, English cryptanalyst and numismatist (died 1996)
Joan Clarke, English cryptanalyst and numismatist (died 1996)