A license issued pursuant to this chapter shall be conspicuously displayed in the place of business of the licensee or, in the case of a mobile unit, upon the mobile unit.
D.C. Code § 26-310
A license issued pursuant to this chapter shall be conspicuously displayed in the place of business of the licensee or, in the case of a mobile unit, upon the mobile unit.
D.C. Code § 26-310