I am looking for historical airport schedules from the US and Canada from after WWII. For example, I would really like to see a flight schedule (or schedules) from New York from around 1948. Any ideas where I might find this data either on the internet or in an old publication?
This is not like the question Where can I find historical data on arrival and departure times of a particular flight? because that question was about relatively recent flights. I am aware that I could get data from flightstats.com for the last ten years or so. What I want is flight schedules that are from before 1991.