If you're looking for sheet blankets, ask at a spa if they use them and would give the name of their supplier. There are still flannel sheets with patterns and plaids and stripes printed on them. I get a catalog that has them and while a bit 'spendy', I have used mine daily for 3 years and they still look like new. They get washed every week.
If you are looking for chenille, check out the Blair company. They should be on the internet and you can request a catalog. They carry 'down home' type bedding that isn't all the latest gray, etc. No connection to the company.