This is a preparatory drawing done by Keith Bailey under the supervision of Ian Hamilton Finlay for a slate sculpture. It depicts a fighter plane of World War II vintage with a trail of smoke during combat. Angels, Bandits and Saints refers to nicknames of fighter aircraft during that period. Contrails is the condensation trail emitted by jet aircraft exhaust. Contrails form when hot humid air from jet exhaust mixes with environmental air of low vapor pressure and low temperature. The mixing is a result of turbulence generated by the engine exhaust. A different version of this work in collaboration with Ron Costley was made into a medallion. -- Source of annotation: Marvin or Ruth Sackner.