One place you can order all kinds of wheat, flour and equipment is breadtopia.
Products
I mill my own wheat and rye. Small mills can be had at Lehmans hardware and other places.
Lehman's Hardware Store | Order Online
The only flour I buy is high gluten from Canada. Non-gmo.
If you're making wheat and rye breads you may want to add a cup or two of white flour and wheat gluten to get it to rise and lighten up the crumb. When I make "pure" wheat or rye breads, they make a great door stopper or can be weaponized if needed.
I urge all to get into this. Great prepper skill and wonderful way to get back to good eating. BTW, Red Fife wheat makes a really good loaf. Its an old standard from Canada.
Red Fife wheat - Wikipedia