You are correct that Jimmie used yellow mustard - and grill the dogs on a flattop. When reading the string, you need to be careful because many are only interested in Hudson Valley establishments rather than the Port Jervis establishment. I did post a version of the Port Jervis Texas Lunch version earlier.
For the rest of your post - Nedzip was a regular for us. He closed after 1970 and I think he went to Stroudsburg Pa. Next to Jimmie's (on Front Street) there was also Spiro's soda shop way back when I was little. There was also a triple S blue stamps store at the corner. I also think there was a hardware store at the opposite corner. And this time of year you would walk by them all to see the Mt Carmel celebration.
For the rest of your post - Nedzip was a regular for us. He closed after 1970 and I think he went to Stroudsburg Pa. Next to Jimmie's (on Front Street) there was also Spiro's soda shop way back when I was little. There was also a triple S blue stamps store at the corner. I also think there was a hardware store at the opposite corner. And this time of year you would walk by them all to see the Mt Carmel celebration.