Keepsake Quilting sells beautiful medleys of 'amish' solids, both dark and light, in half yard and full yard cuts (as well as quarter yards) and half yard medleys of 30's repro colors, or single color gradations.
http://quilting.keepsakequilting.com...rid&af=&cnt=24
Their 'amish' colors are all from the Marcus Brothers Centenial Solids line. I'm not sure about the 30's colors, but KQ mainly carries RJR, Marcus, and Kona in their solids section and never any 'generic' brands of anything anywhere in the store. If you're not happy for any reason, they have a 'no quibble' return policy...can return anything at any time for any reason, no questions asked. Customer service is great if you have questions before or after ordering.