Home Archive Search Media Media-418659.jpg FRE 9336 IMAGE Download Image By downloading this image, you are agreeing to our Terms and Conditions A B-24 Liberator (serial number AL578) nicknamed "Marco Polo" of No 231 Squadron, RAF. Handwritten caption on reverse: 'RAF Transport.' Revisions Date: 2 Feb 2015 10:00:12 ContributorAAMChangesAAM ingestSourcesIWM, Roger Freeman Collection