I am writing to request your help with a research project in which I am engaged.

While investigating health codes pertaining to food vendors (supermarkets, restaurants, etc.), I have encountered difficulty finding a legal basis for a common assertion: that in these establishments, shoes must be worn "by order of the health department." You may be familiar with such signs, which appear in many areas of the country. I am now checking with health authorities across the nation, to determine where such requirements apply.

In [name of state], to your knowledge, are there health laws or regulations requiring customers in shops, markets, or restaurants to have on footwear? If so, could you cite these laws/regulations?

A brief letter of reply from your department would be most helpful. Thank you in advance from your assistance with my research.

Yours truly,