Home Archive Search Media Media-456509.jpg FRE 9393 IMAGE Download Image By downloading this image, you are agreeing to our Terms and Conditions Engineers at Pratt and Whitney run engine tests on a P-47 Thunderbolt (serial number 41-6060). Handwritten caption on reverse: 'RP-47B, hold an engine test.' Revisions Date: 2 Feb 2015 10:00:14 ContributorAAMChangesAAM ingestSourcesIWM, Roger Freeman Collection