so there are two places you can get the specific food that i posted. diners or delis. it depends on what you're looking for and both have their pros and cons. you'll have more luck finding good food if you go to New York or New Jersey
Diners: Great if you don't really know what you want and they have basically everything. Every diner usually has its specialty (Greek food, Italian food, etc), so if you're looking for Deli you'd have to try a few or know someone who knows the area.
Delis: again, you kind of have to know where you're going but you'll know you find a good one if you see it packed. the one back home which closed down a few years ago was ALWAYS packed. and they had the BEST Reuben