Peter Thirsk]]> IBCC Digital Archive]]> eng]]> Artwork]]> Royal Air Force]]> 1941-05-14]]> 1941-05-29]]> Peter Thirsk]]> IBCC Digital Archive]]> eng]]> Text]]> Royal Air Force]]> 1941-05-06]]> 1941-05-07]]> Peter Thirsk]]> IBCC Digital Archive]]> eng]]> Royal Air Force]]> Great Britain]]> 1941-05]]>