Items related to the structure and stresses of airship frames. Includes:

- 16 page report on Forces in an Airship Structure (first page missing) and a blueprint diagram with drawings and calcluations related to rigid transverse frames

- 10 page handwritten report entitled 'A Note on the Efficiency of Airships when used as Load Carriers'

- Four page document entitled 'The Application of Production Methods to High Strength/Weight Ratio Structures

- Handwritten drawings and calculations

- Three separate reports on spiral-seam tubes

- Five blueprint data sheets

- 16 page report produced by the Aeronautical Research Committee entitled 'An Analysis of Primary Stresses in the Shell of a Rigid Airship'