This is actually RB-25D USAAF s/n 43-3374 marked as B-25B 40-2344, the B-25 flown by Jimmy Doolittle during the April 1942 raid over Japan. 43-3374 was TOC 31 October 1943 and was retired in December 1957. It was then transferred to the North American Aviation plant in Inglewood, CA. There it was reconfigured to resemble Doolittle's B-25B. That was finished in April 1958 and the a/c flown to the USAF Museum. This slide was taken in the outdoor display area at the old museum. It is currently on display at the current museum in the World War Two Gallery.

1943: TOS USAAF as a B-25D. Later converted to F-10 photo recon aircraft; assigned to the 6th Air Force in South America. 1948: Redesignated RB-25D. By 1952: 3425th Instruction Squadron/3415th Technical Training Group, Lowry AFB. 3/52: Assigned to Davis-Monthan AFB, AZ, for storage. 30 Dec '57: USAF requested to have the plane modified to resemble Jimmy Doolittle's plane flown on the Tokyo raid in April 1942. 2/58: Ferried to North American Aviation, Inglewood, CA, for conversion. 4/58: Flew to Las Vegas, NV for the Doolittle reunion before continuing to the USAFM, Patterson Field, OH.

1943: TOS USAAF as a B-25D. Later converted to F-10 photo recon aircraft; assigned to the 6th Air Force in South America. 1948: Redesignated RB-25D. By 1952: 3425th Instruction Squadron/3415th Technical Training Group, Lowry AFB. 3/52: Assigned to Davis-Monthan AFB, AZ, for storage. 30 Dec '57: USAF requested to have the plane modified to resemble Jimmy Doolittle's plane flown on the Tokyo raid in April 1942. 2/58: Ferried to North American Aviation, Inglewood, CA, for conversion. 4/58: Flew to Las Vegas, NV for the Doolittle reunion before continuing to the USAFM, Patterson Field, OH.

1943: TOS USAAF as a B-25D. Later converted to F-10 photo recon aircraft; assigned to the 6th Air Force in South America. 1948: Redesignated RB-25D. By 1952: 3425th Instruction Squadron/3415th Technical Training Group, Lowry AFB. 3/52: Assigned to Davis-Monthan AFB, AZ, for storage. 30 Dec '57: USAF requested to have the plane modified to resemble Jimmy Doolittle's plane flown on the Tokyo raid in April 1942. 2/58: Ferried to North American Aviation, Inglewood, CA, for conversion. 4/58: Flew to Las Vegas, NV for the Doolittle reunion before continuing to the USAFM, Patterson Field, OH.

This Mitchell is in fact 43-3374, a RB-25D that has been restored to represent General Doolittle's B-25B and is on display in this diorama at the National Museum of the USAF.