There’s no date on this blank menu, but I suspect it is from the late 1960s when rail ridership and service was rapidly declining. The menu itself is made of glossy paper laminated onto regular paper. The back of the menu (the part on regular paper) has an ad for eating in the diner (which seems redundant since anyone holding the menu would already be there) and, curiously, a space for people to take notes about the “highlights of my trip.”
Just barely visible in the background of the farm scene on the cover is a distant passenger train. Presumably this is supposed to be an Illinois Central train, but the illustrator was unable to give it the distinctive IC chocolate brown color using just the red and yellow covers on the menu cover.