This Title contains:
- French military Notice Technique (descriptive and maintenance manual) for the Liore et Olivier LeO 20 Type BN3 Modele 1925, document N.C.D.10 dated November 1928 with approx. 123 pages. In the FRENCH language.
- Manufacturer’s technical brochure for the Liore et Olivier avions, LeO 20 and derivatives, undated with approx. 18 pages. In the FRENCH language.
- NACA Aircraft Circular No 1 – Liore et Olivier Type 12 Light Bomber and Type 20 Commercial. A 10 page technical description of the aircraft, in English, dated March 1926.