This Canadian Pacific on-board stationery uses a typestyle that is often called Old English. That almost certainly dates it to before the introduction of the Canadian domeliner, and probably to the 1930s.
Click image to download a PDF of this letterhead. Click here to download a PDF of the matching envelope.
Like many pieces of on-board stationery from the pre-war era, this paper has a linen finish that makes it look like it was woven. The “weave” of the letterhead is parallel to the cut of the paper, while that of the envelope is at about a 12-degree angle. Perhaps it was possible to get more envelopes out of a single sheet of paper if they were cut at an angle.