D.C. Code § 47-841
All valuations of property belonging to the United States shall be made by such persons as the Secretary of the Interior shall appoint, and under such regulations as he shall prescribe.
R.S., D.C., § 139
enacted, Apr. 9, 1997, D.C. Law 11-254, § 2, 44 DCR 1575
1973 Ed., § 47-723.
1981 Ed., § 47-841.