To clarify: you're looking for immigrants arriving in Canada who came to the USA sometime after 1895 when US Border Crosssing records began. Do you have any time frame for when they arrived in Canada? Also, could you tell me the NARA microfilm number of the border crossing record you're looking at so I can think about scope and content and the record creation process of that US record collection?

I don't know the NARA citation because I pulled it from the Mormon search site.

Can you see a form number on the card itself? In any case, the time frame matters greatly during this period. If you could give more data about when events may have taken place, it will improve the question.

I can't navigate to the record via the link you posted. When I click on the link, it redirects me to unigen.us/tree/HHH (perhaps because I don't have an account and am not logged in). Can you take a screenshot of at least part of the card so I can see what form it is? If I have to ask one of my expert friends, they'll want to know.

See the table in this FamilySearch Wiki article familysearch.org/en/wiki/…

I don't know why the link wouldn't work. The code only hides living people … Oh, I forgot it also hides sources. So you wouldn't be able to see the card. But you should have been able to see the other info. Hmmm.

That Wiki table and the index of the collection incorrectly says it is people entering at St. Albans, Vermont. Near the top of every card it states where they actually entered. The one I put here says Sweet Grass, Montana. I have several others in Montana and some that say Portal, North Dakota.

The records are titled as "St Albans records" after the INS office where they were filed. Also, bear in mind that while we want to answer the OP's question on this site, our goal is to build a repository of answers which are robust enough to help anyone else with a similar question.

The title is accurate. The statements in the description and in the index that St Albans is the place of immigration are not accurate.

I am moving this discussion to chat.

@WGroleau I don't know what you expect me to say about the St. Albans records. I am not responsible for editing the FamilySearch Wiki, writing the titles of NARA microfilms, or writing the titles of any databases anywhere that might be derived from those records.

Thank you for adding the images of the cards to your question. Now, let me explain why I asked. Passenger lists like at Ellis Island were compiled by clerks in the shipping company offices, from intake forms that were filled out by the ticket buyer. The buyer may have been one of the passengers in the group, or not. The passenger would not have had access to the big manifest books that we consult today, plus copying was involved, and errors can creep in.

I know the process involved for the passenger manifests, but I'm not as familar with where the information came from for these Form 548 cards. I know people to ask, but I needed to know what you were looking at so I could ask an intelligent question.

You said "I suspect a US clerk negligently wrote the same thing on both cards." so now I want to know who filled out the cards and where the intake information came from. This is a card about an entry in 1914 but it's written on a card that has "Act of 1924" printed on it. Also signed by an Immigrant inspector (not some dumb clerk).

Also, we haven't discussed the citizenship status of your people of interest, which will determine which record sets they might appear in.

Nationality = Canada so have you considered looking for Canadian Naturalization records? If they came to the US and stayed, did they naturalize in the United States? And so on.

Thank you for adding the card images so I can see what you're looking at.

This article may be of interest.archives.gov/files/dc-metro/know-your-records/genealogy-fair/…

I don't know why this PDF has repeated pages, but all the pages in the article appear to be there.