Steve,
M&N Sandwich Shop, Lincoln Ne. - ca. 227 miles from Curtis, Rt. 80 most of the way.
Chicago-style sandwiches, and you won't find better even in Chicago. I've been living on the west coast for a year now, and my desperate search to sate my craving for M&N has taken me to every deli in town claiming to be Chicago style. They're good, but they're not M&N. This is one of the few gems of Lincoln (along with The Watering Hole's grilled wings) that you won't find ANYWHERE else, and once you've had it, you'll want to keep going back, no matter how unhealthy a giant sandwich of meat HAS to be.