Most of the dates in this book are in fact scrapping dates, rather than
retirement dates, at least in later years. The T4c's show dates in 1959 and
we know for a fact they last ran no later than 1957, perhaps even as early
as 1956. They were sure rusty and had not run in some time when I saw them
in 1958. I do not know CP's policy but it could have been that they
considered the scrapping date to be the retirement date.
On most railroads they would be officially retired soon after their last
runs and then turned over to an assets disposal department who would be in
charge of disposing of them.
Doug
David, I'm sure more would have responded but that would
be redundant. With regards to your initial query, there is
no list of when CP steam locomotives were scrapped and
certainley not in my copy.