Based on the provided content, the sources do not contain information about short-term rental (STR) regulations specific to Elk Garden, West Virginia, or its county (Mineral County). While one source confirms that short-term rental options, including sublets and monthly rentals, exist in Elk Garden (indicating STRs are generally allowed), none of the materials detail licensing requirements, permits, guidelines, or contact information for the local authority responsible for enforcing STR regulations. Therefore, per your instructions to "return '' if none of the materials provided are relevant," the response is an empty string.