I'm not that old, but I am still old enough to remember "Blue Laws" from my adolescence in northwest Texas. Maybe they didn't have "Blue Laws" in your part of the country, or perhaps they went by a different name. "Blue Laws" were restrictions that prohibited certain types of products from being sold on Sunday. Where I grew up, these restrictions went far beyond forbidding the sale of beer before church services let out. I remember going into supermarkets and seeing huge plastic tarps covering entire aisles because the store was not permitted to sell the items stocked there.