I can't believe that no one has posted anything about this franchise. Dawn Donuts were a part of my childhood. My grandma would always have them in a white metal drawer for us kids. She called them "fried cakes". You can see some cool old signs at www.agiltynut.com
I grew up in Flint Michigan and there is one on Clio Road and one in Saginaw. Any other places survive out there?