This title contains:
- Manufacturer produced Instruction Manual for the Monospar ST.25, titled “Maintenance, Rigging and General Instructions” (includes pilot’s notes), undated with approx. 20 pages of text and 10 illustrations.
- Manufacturer produced Instruction Manual for Pobjoy Aero Engines, Niagara Series III, Cataract Series III and Niagara Series IV, titled “Installation, Care and Maintenance Manual”, document 1000.11.36 with approx. 88 pages of text and 15 illustrations.
- NACA Aircraft Circular No 148, “Mono-Spar” civil aircraft. A technical descriptive circular dated July 1931 with approx. 11 pages. Although not specifically stated in the circular, this describes the first Monospar, the ST-3, but it gives a good description of the structural principles.