CDAC02881: Overflight of Canada by SAC Aircraft (Oct 6, 1959)/CDAC02882 (Oct 7, 1959)

These documents are the first of many form letters requesting clearance for overflights after the initial period of overflights expired. Each letter uses the same wording with minimal variation, although the duration of clearance would be reduced from six months to three months by the beginning of 1960.