Whenever a licensee desires to store alcoholic beverages, other than state tax-paid beer or wine, in a private warehouse, such licensee shall make application for approval of such warehouse to the district office of the department. The application shall specify the location of the warehouse, by whom maintained, the name of the licensee and the types of licenses, together with the numbers thereof, held by him. The district supervisor may approve the application if he is satisfied that the stated facts are correct. The applicant shall be given written notice of such approval, and he shall post it inside and near the entrance to the warehouse.