There is a French tradition, when people are lucky enough to get a job, of familiarizing themselves with the local archives and regional history in the time period they work on.

Medievalists in the United States and Canada can and should do the same.

Not just whatever medieval manuscripts have ended up in your region--though absolutely do that too!--but the history of the Native/First Nations polities of the region you live and teach in in the period was call the "Middle Ages" in Eurasia.

And then teach it. Don't wait for your university to hire an expert--no one is hiring people right now--and don't wait for your students to take an archaeology/anthropology/NAIS class--though do suggest your advisees to engage in Native American and Indigenous studies.

We are trained to do research into the past, using textual and material sources. So do the work, even on a secondary source level.

Look at your State Archaeologists office. Look at state parks and historic sites. Go read about the Native peoples who lived (and still do) in your state, and then go see if their Tribal Historic Preservation Officers and museums have websites and links.

And then, if you have database access, well, the riches available to you are absurd.

If like me you don't really, figure out starting points--again, we do research! ILL some articles and some intro surveys, and delve from there.

Most of your students will not have learned ANYTHING about Native polities before Euro-American colonization.

So if you can even fix that and whet their intellectual appetite to know more, you've done so much.