It appears that we have a number of very knowledgeable members on this forum for Canada. I need your help.

I am looking for a reference source that discusses the early development of the Post Office and postal history of Canada, under the British postal system.
I have found that the British established post offices at Montreal, Quebec, and Three Rivers in 1764.
The ideal reference would provide a table of post offices established after that date, through about 1800 or 1820, with the dates (year or more specific), and where known, who was the initial postmaster(s), etc.
My only personal library reference is William Smith, "History of the Post Office in British North America", but the establishment of post offices is scattered throughout at random, and only year dates are provided. Plus he has a few conflicts in the dates he provides. Has another writer improved on this post office information?
I have tried most of the usual on-line searches, with only marginal results.
Thanks for any recommendations as to where to continue to look.
Mike