Title 1 contains:
- US Navy Pilot’s Handbook for the Piasecki HRP-1, AN 01-250HA-1 dated 1-7-50 with approx. 48 pages.
- USAF Flight Handbook for the Piasecki H-21B and H-21C, T.O. 1H-21B-1 (formerly AN 01-250HDB-1) dated 1-6-55, revised to 1-3-56 with approx. 202 pages.
Title 2 contains:
- USAF Preliminary Flight Handbook for the Piasecki YH-21, AN 01-250HDA-1) dated 23-3-53 with approx. 98 pages.
- RCAF Pilot’s Operating Instructions for the Piasecki H-21A and H-21B, EO 05-80A-1 dated 1 Apr 57 with approx. 218 pages.