Canadian R.p.o. Listings?

Is there a listing of Canadian R.P.O. cancels somewhere on the Internet?

This is a good question -- I'd like to know, as well.

I've never been able to find a good online resource with everything in one place. The BNAPS (British North American Philatelic Society) study group newsletters have a lot of good info but spread out over many issues.

BNAPS has published a "Catalogue Of Canadian Railway Post Office Cancellations and Related Railway Postmarks including Selected Waterway Postmarks" by Ross Gray.

And there's an older catalog by Lewis Ludlow "Catalogue of Canadian Railway Cancellations and Related Transportation Postmarks"

I've got T.P.G. Shaw's 1944 Catalogue of Canadian Railroad Cancellations but it doesn't list a Toronto & Ca???? partial strike that I'm assuming is an RPO.
Thank you for your suggestions.

It is probably Toronto & Capreol (in use 1965-1971).

Information from the BNAPS site, where there is a spreadsheet listing all Canadian Railway lines.

And as an answer to the O/P, this spreadsheet is not a catalogue of RPO cancels, but it is a place to start.

Jan

Thank you, Jan!