1969 JW_SIGP_PLG_PRINT_MESSAGE: http://www.johnbarry.org.uk/vassall/index.php/press/1970s/41-1960s#sigProGalleria00b23a869c
1968 JW_SIGP_PLG_PRINT_MESSAGE: http://www.johnbarry.org.uk/vassall/index.php/press/1970s/41-1960s#sigProGalleriac6ae8d620d