I wonder if it as made by Pendleton? They make blankets with a Native American look.Pendleton blankets

I wonder with the fringe if it isn't a rug and not a blanket? I thought Pendleton, too. You could probably send them a photo and ask them if it is one of theirs.
eta: I guess there are some vintage Pendleton blankets with fringe.

The colors suggest Mexican serapi to me. First impression.

Thank You, I just posted photos to a Pendleton Facebook group and a gentelman who ownes 3 but different colors and he said it is vintage from very Southern Mexico... so I think you are correct. Now I can dig a little deeper to find value.

It reminds me of the Mexican Saltillo serape that my grandmother used as a dresser scarf.

https://zinniafolkarts.com/blogs/news/mexican-textiles-101-the-saltillo-blanket-or-serape

The gradated tones in the vertical stripes remind me of a Mexican blanket that my husband had. No idea where it came from -- he had it pre-marriage.

Thanks... looks like most feel its Mexican!