Penny's has summer rolls. I'm not sure about bun.
Penny's Noodle Shop1130 Chicago Avenue, Oak Park
(708) 660-1300
http://pennysnoodleshop.comHere are a couple of Northwest Side spots ... not that close to you, but nearer than Uptown or Glendale Heights.
Nha Trang3711 W. Belmont Ave., Chicago
(773) 588-9232
Big Pho3737 W. Lawrence Ave., Chicago
(773) 478-8282