I wrote an article many years ago about my restoration of a Chicago Express. I restored one for a friend and liked it so much I bought one for myself. This is one of the earliest games with ramps and they are an integral part of the theme.
I have not restored my game yet and am looking for a shooter and ball lift casting. The mechanism is basic with only three solenoids under the playfield, all triggered by the ball entering the first elevator or the second. This game will remain a permanent part of my collection.