aircraft recognition for the ground observer DEPARTEMENT OF THE AIR FORCE

"This manual is published to provide aircraft recognition material to the civilian volonteers of the RCAF Ground Observer Corps.
The manual contains pictures and silhouettes of aircraft, a glossary of terms and information on the various markings, insignia and symbols used on military and civilian aircraft that are most likely to be observed over Canada and the United States. Illustrations and data are presented from the Observer's point of view. The last chapter contains additional information for the enthusiast."