Lt. Col. John R. Buschmann compiled this information about the Boeing B-29 Superfortress, known as "T-Square 54," through personal research and interviews with former crew members. In 2015 these materials, including a short history of the plane written by Lt. Col. Buschmann, were donated to the Museum of Flight in an effort to keep the physical plane and its history housed in one location.

Archival materials relating to the missions of the United States Army Air Forces 498th Bombardment Group in 1944-45. The Museum of Flight's Boeing B-29 Superfortress was of this group and material in this collection reflect the activities of the aircraft during that time period. Many of the charts are annotated for specific missions and some contain identified targets.