During the 60's, my sister and I went to Lowell Elementary School on Hirsch St in Chicago and across the street was Mary's Beef Sandwiches. In order to get a sandwich that day, you had to pre-order in the morning. These were not your typical roast beef sandwich. This was ground beef in a red sauce, with green peppers on a Italian bread. Trying to find anyone that remembers this or has a connect for the recipe, thanks.