A.P. 2454A. 1st edition dated October 1942. 26p. Booklet written for the instruction of personnel undergoing training, and for instructors. It gives an insight into how balloon publications are issued and amended and shows how to make full used of the information available. Covers Air Publications, Confidential Documents, Secret Documents, Provisional Balloon publications and Air Diagrams. Also covers amendments to the above and how to go about adding amendments, binding documents etc. Finally there is a list of Balloon APs, Amendment lists and leaflets, and Balloon Air Diagrams issued as of August 1942. Illustrated with nice cartoon drawings. The cover is a little dog-eared but good internal pages. Stock code P14481.