Tin can, 20th century. Tin cans are indicative of buying pre-packaged national brand foods. Throughout the 19th and into the 20th centuries the Maynard and Burgess families had to contend with racism in every facet of their lives. It was especially noticeable in the market place, where white vendors would raise the cost of fresh produce for their black customers only. In order to avoid this, the Maynard and Burgess families bought a lot of pre-packaged goods sold on a national level, which were consistently priced across the board. During this excavation large numbers of similar cans were uncovered, indicating the purchase of many types of pre-packaged foods.