LC Gagnon was a well-seasoned ephemera collector and railway station schedule racks were one of his favourite sources of artifacts.
As Trans-Canada Air Lines was owned by Canadian National Railways from 1937 until 1978, this pamphlet could have come from a schedule rack at Central Station.
Or ... this 70-year-old document might have come from Dorval Airport, as regularly-scheduled commuter trains on both railways would have offered a tempting opportunity for an quick excursion.
Over on my Lachine Peas blog ...
is a CFCF April 1967 record store Hit Chart showing a Nordair Constellation
being used to transport contest winners to a Monkees concert in Toronto.