Piper L-4 GrasshopperPiper L-4 GrasshopperPiper L-4 GrasshopperBoeing Stearman PT-17/N2SBoeing Stearman PT-17/N2SBoeing Stearman PT-17/N2SBoeing Stearman PT-17/N2SGrumman F4F WildcatGrumman F4F WildcatGrumman F4F WildcatLockheed P-38 LightningLockheed P-38 LightningConsolidated B-24 LiberatorNorth American P-51 MustangNorth American P-51 MustangNorth American P-51 Mustang